Textual Dictionary
Chapter 13
Natural Resources
Natural Resources
Elementary Science Class Five (English Version)
Every word below is taken from this chapter, and meanings are given in clear English.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (REE-sors) | Something used for support or help. | support; help | — | Resources can be classified into two types. |
| natural (NATCH-er-ul) | Found in nature. | — | man-made | Sunlight, soil, water, air, plants, and animals are natural resources. |
| man-made (MAN-mayd) | Made by people. | — | natural | Paper, plastic, glass, and electricity are examples of man-made resources. |
| limited (LIM-it-id) | Available only in a restricted amount. | — | unlimited | Oil, coal, and natural gas are limited resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | reused; replaced | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | — | — | Renewable resources can be used as alternative resources. |
| conserve (kun-SURV) | To protect and use carefully. | save; protect | — | It is very important to use natural resources wisely for conserving natural resources. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | — | We can conserve natural resources by using less energy, reusing, and recycling things. |
1. How to Use This Sheet
Learner Steps
- Read the chapter before studying the word list.
- Cover the meaning column and test yourself.
- Say each word aloud using the pronunciation guide.
- Compare the synonyms and antonyms carefully.
- Use the example sentences for writing practice.
- Review the key points after completing the word practice.
Textual Dictionary
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (REE-sors) | Something used for support or help. | support; help | — | Resources can be classified into two types. |
| natural (NATCH-er-ul) | Found in nature. | — | man-made | Sunlight and soil are natural resources. |
| man-made (MAN-mayd) | Made by people. | — | natural | Paper and glass are man-made resources. |
| limited (LIM-it-id) | Available only in a restricted amount. | — | unlimited | Oil and coal are limited resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | reused; replaced | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | — | — | Renewable resources can be used as alternative resources. |
| conserve (kun-SURV) | To protect and use carefully. | — | — | We should conserve natural resources. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | — | We can conserve natural resources by reusing and recycling things. |
◆ Key Points
- Resources are things that people can use for support or help.
- Resources are classified into natural resources and man-made resources.
- Natural resources are found in nature and people cannot make them.
- Sunlight, soil, water, air, plants, and animals are natural resources.
- Minerals and fossil fuel are also natural resources.
- Man-made resources are made by people using natural resources.
- Oil, coal, and natural gas are non-renewable and limited resources.
- Renewable resources can be replaced or reused.
- Sunlight, wind, and water can be used as alternative resources.
- Solar panels get electrical energy from sunlight.
- Wind turbines produce electricity when wind turns their blades.
- Using less energy, reusing, and recycling help conserve natural resources.
2. Key Words - Main Table (1-15)
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (REE-sors) | Something used for support or help. | support; help | — | Resources can be classified into two types. |
| natural (NATCH-er-ul) | Found in nature. | — | man-made | Sunlight and soil are natural resources. |
| man-made (MAN-mayd) | Made by people. | made | natural | Paper and glass are man-made resources. |
| limited (LIM-it-id) | Available only in a restricted amount. | — | unlimited | Oil and coal are limited resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | reused; replaced | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | — | — | Renewable resources can be used as alternative resources. |
| conserve (kun-SURV) | To protect and use carefully. | save; protect | — | We should conserve natural resources. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | — | We can conserve natural resources by reusing and recycling things. |
| things (thingz) | Objects or items. | resources | — | We can find many things around us. |
| classified (KLASS-uh-fyd) | Put into groups. | — | — | All these things can be classified into natural things and man-made things. |
| sunlight (SUN-lyt) | Light that comes from the Sun. | — | — | People use solar panels to get electrical energy from the sunlight. |
| soil (soyl) | The upper layer of earth in which plants grow. | — | — | Soil is a natural resource. |
| water (WAW-ter) | A natural liquid resource used by people. | — | — | Water is a renewable resource. |
| energy (EN-er-jee) | The power used to produce electricity or do work. | — | — | Natural resources provide us with energy. |
| minerals (MIN-er-ulz) | Natural substances found in the earth. | — | — | Minerals are also natural resources. |
◆ Key Points
- Resources are things that people can use for support or help.
- Resources are classified into natural resources and man-made resources.
- Natural resources are found in nature and people cannot make them.
- Sunlight, soil, water, air, plants, and animals are natural resources.
- Minerals and fossil fuel are also natural resources.
- Man-made resources are made by people using natural resources.
- Paper, plastic, glass, and electricity are examples of man-made resources.
- Oil, coal, and natural gas are non-renewable and limited resources.
- Renewable resources can be replaced or reused.
- Sunlight, wind, and water can be used as alternative resources.
- Solar panels get electrical energy from sunlight.
- Using less energy, reusing, and recycling help conserve natural resources.
3. Key Words - Main Table (16-30)
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| fossil (FOS-uhl) | The remains or traces of very old living things found in the earth. | remains; trace | — | Fossil fuel is a natural resource. |
| fuel (FYOO-uhl) | A substance used to produce energy. | energy source; power source | — | Fossil fuel is also a natural resource. |
| depend (di-PEND) | To need or rely on something. | rely; need | avoid; reject | People depend on natural resources to make new things. |
| demand (di-MAND) | The amount of something that people need or want. | need; requirement | supply | The demand for natural resources is increasing. |
| increasing (in-KREE-sing) | Becoming greater in amount or number. | growing; rising | decreasing; falling | The demand for natural resources is increasing. |
| population (pop-yoo-LAY-shuhn) | The number of people living in a place. | people; inhabitants | — | The demand increases as the human population grows. |
| especially (eh-SPESH-uh-lee) | More than usual or more than others. | particularly; mainly | generally; equally | Some natural resources, especially oil, are limited. |
| therefore (THAIR-for) | For that reason. | so; consequently | nevertheless; however | Therefore, people have to find alternative resources. |
| non-renewable (non-ri-NOO-uh-bul) | Unable to be replaced within a short time. | exhaustible; finite | renewable; replaceable | Oil, coal, and natural gas are non-renewable resources. |
| replaced (ri-PLAYST) | Put back or supplied again. | renewed; restored | removed; lost | Renewable resources can be replaced or reused. |
| solar (SOH-lar) | Related to the Sun. | sun-powered; sunlight-based | — | People use solar panels to get electrical energy. |
| panel (PAN-uhl) | A flat device that collects or uses energy. | board; plate | — | A solar panel gets electrical energy from sunlight. |
| electrical (ih-LEK-tri-kuhl) | Related to electricity. | electric; powered | non-electric | Solar panels provide electrical energy. |
| wind (WIND) | Moving air. | breeze; air current | stillness | Wind is another alternative energy resource. |
| turbine (TUR-byn) | A machine with blades that turns to produce energy. | engine; generator | — | A wind turbine produces electricity when wind turns its blades. |
◆ Key Points
- Resources are things that people can use for support or help.
- Natural resources are found in nature and people cannot make them.
- Man-made resources are made by people using natural resources.
- Natural resources provide people with food, clothing, shelter, and energy.
- Oil, coal, and natural gas are non-renewable resources.
- Non-renewable resources cannot be replaced for millions of years once they are used up.
- Renewable resources can be replaced or reused.
- Sunlight, wind, and water can be used as alternative resources.
- Solar panels get electrical energy from sunlight.
- Wind turbines produce electricity when wind turns their blades.
- Using less energy, reusing, and recycling help conserve natural resources.
4. Subject Terms and Definitions
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (/rɪˈsɔːrs/) | Something that people can use for support or help. | support; help; aid | — | Resources can be classified into two types. |
| natural (/ˈnætʃərəl/) | Found in nature and not made by people. | earth-made; environmental; native | man-made; artificial | Sunlight, soil, and water are natural resources. |
| man-made (/ˌmæn ˈmeɪd/) | Made by people, often by using natural resources. | artificial; human-made; manufactured | natural; unmade | People use trees to make timber and paper. |
| renewable (/rɪˈnuːəbəl/) | Able to be replaced or reused. | replaceable; reusable; restorable | non-renewable; exhaustible | Sunlight, wind, and water are renewable resources. |
| non-renewable (/ˌnɒn rɪˈnjuːəbəl/) | Unable to be replaced for millions of years once used up. | exhaustible; finite; limited | renewable; replaceable | Oil, coal, and natural gas are non-renewable resources. |
| alternative (/ɔːlˈtɜːrnətɪv/) | Another choice used instead of something else. | choice; substitute; option | — | Renewable resources can be used as alternative resources. |
| solar panel (/ˈsoʊlər ˈpænəl/) | A panel used to get electrical energy from sunlight. | sunlight collector; energy panel; panel | — | People use solar panels to get electrical energy from sunlight. |
| wind turbine (/ˈwɪnd ˌtɜːrbaɪn/) | A machine whose blades turn in the wind to produce electricity. | wind generator; turbine; generator | — | A wind turbine produces electricity when wind turns its blades. |
| conserve (/kənˈsɜːrv/) | To protect and use natural resources wisely. | save; protect; preserve | waste; misuse | We can conserve natural resources by using less energy. |
| recycle (/ˌriːˈsaɪkəl/) | To process and use things again. | reuse; reprocess; use again | discard; waste | Reusing and recycling things help conserve natural resources. |
◆ Key Points
- Resources are things that people can use for support or help.
- Resources are classified into natural resources and man-made resources.
- Natural resources are found in nature and people cannot make them.
- Sunlight, soil, water, air, plants, animals, minerals, and fossil fuel are natural resources.
- Man-made resources are made by people using natural resources.
- Paper, plastic, glass, and electricity are examples of man-made resources.
- Oil, coal, and natural gas are limited non-renewable resources.
- Non-renewable resources cannot be replaced for millions of years once they are used up.
- Renewable resources can be replaced or reused.
- Sunlight, wind, and water can be used as alternative resources.
- Solar panels get electrical energy from sunlight.
- Wind turbines produce electricity when wind turns their blades.
- Using less energy, reusing, and recycling help conserve natural resources.
5. Words in Context
Read the passage first. Notice how the bold words describe the two main types of resources and the need to use them wisely.
All resources can be classified into natural and man-made resources. Sunlight, soil, water, and minerals are natural resources, while paper and glass are man-made. Oil, coal, and fossil fuel are limited. Sunlight, wind, and water are renewable, so they can be used as alternative resources. Using less energy, reusing, and recycling help us conserve natural resources.
Use the table to connect each word with its meaning, related words, and a sentence from the chapter context.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resources (/rɪˈsɔːrsɪz/) | Things used for support or help. | support; help | — | Resources can be classified into two types. |
| classified (/ˈklæsɪfaɪd/) | Put into groups or types. | grouped; sorted | — | All these things can be classified into natural things and man-made things. |
| natural (/ˈnætʃərəl/) | Found in nature and not made by people. | — | man-made | Sunlight, soil, and water are natural resources. |
| man-made (/ˌmæn ˈmeɪd/) | Made by people. | — | natural | Paper, plastic, and glass are man-made resources. |
| minerals (/ˈmɪnərəlz/) | Natural substances found in the earth. | — | — | Minerals are also natural resources. |
| fossil fuel (/ˈfɒsəl ˈfjuːəl/) | Fuel formed from the remains or traces of very old living things. | — | — | Fossil fuel is a natural resource. |
| renewable (/rɪˈnjuːəbəl/) | Able to be replaced or reused. | replaced; reused | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (/ɔːlˈtɜːrnətɪv/) | Another choice used instead of something else. | — | — | Renewable resources can be used as alternative resources. |
| conserve (/kənˈsɜːrv/) | Protect and use natural resources wisely. | save; protect | — | We can conserve natural resources by using less energy. |
6. Exercise 1 - Match the Meaning
Match each word with the correct meaning. Write the letter of the meaning beside the word.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| 1. resource (REE-sors) | A. Made by people. | support; help | — | Resources can be classified into two types. |
| 2. natural (NATCH-er-ul) | B. To process and use things again. | — | man-made | Sunlight and soil are natural resources. |
| 3. man-made (MAN-mayd) | C. Another choice used instead of something else. | made | natural | Paper and glass are man-made resources. |
| 4. limited (LIM-it-id) | D. Found in nature. | — | unlimited | Oil and coal are limited resources. |
| 5. renewable (ree-NOO-uh-bul) | E. To protect and use carefully. | reused; replaced | non-renewable | Sunlight, wind, and water are renewable resources. |
| 6. alternative (awl-TUR-nuh-tiv) | F. Available only in a restricted amount. | — | — | Renewable resources can be used as alternative resources. |
| 7. conserve (kun-SURV) | G. Able to be replaced or reused. | save; protect | — | We should conserve natural resources. |
| 8. recycle (ree-SY-kul) | H. Things used for support or help. | reuse; use again | — | We can conserve natural resources by reusing and recycling things. |
| 9. classified (KLASS-uh-fyd) | I. Light that comes from the Sun. | grouped; sorted | — | All these things can be classified into natural things and man-made things. |
| 10. sunlight (SUN-lyt) | J. Put into groups. | — | — | People use solar panels to get electrical energy from sunlight. |
Answer Key
1–H, 2–D, 3–A, 4–F, 5–G, 6–C, 7–E, 8–B, 9–J, 10–I
1–H, 2–D, 3–A, 4–F, 5–G, 6–C, 7–E, 8–B, 9–J, 10–I
7. Exercise 2 - Fill in the Blanks
Instructions: Fill in each blank with a suitable word from the word bank. Use each word once.
Word Bank: natural, man-made, minerals, fossil fuel, limited, renewable, solar panel, wind turbine, recycling, conserving
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| natural (ন্যাচারাল) | Found in nature (found naturally). | — | man-made | Sunlight is a natural resource. |
| man-made (ম্যান-মেড) | Made by people (made by humans). | made | natural | Glass is a man-made resource. |
| minerals (মিনারেলস) | Natural substances found in the earth (earth substances). | — | — | Minerals are also natural resources. |
| fossil fuel (ফসিল ফুয়েল) | Fuel formed from very old living things (old organic remains). | — | — | Fossil fuel is a natural resource. |
| limited (লিমিটেড) | Available in a restricted amount (not unlimited). | — | unlimited | Oil, coal, and natural gas are limited. |
| renewable (রিনিউএবল) | Able to be replaced or reused (can return or be used again). | replaced; reused | non-renewable | Water is a renewable resource. |
| solar panel (সোলার প্যানেল) | A device that gets electrical energy from sunlight (sunlight energy device). | — | — | People use solar panels to get electrical energy. |
| wind turbine (উইন্ড টারবাইন) | A machine whose blades turn in the wind (wind-powered machine). | — | — | A wind turbine produces electricity. |
| recycling (রিসাইক্লিং) | Processing and using things again (using materials again). | reusing | — | Recycling helps conserve natural resources. |
| conserving (কনসার্ভিং) | Protecting and using carefully (using wisely). | saving; protecting | — | Conserving natural resources is important. |
1. Sunlight, soil, water, air, plants, and animals are __________ resources.
2. Paper, plastic, glass, and electricity are __________ resources.
3. __________ are natural substances found in the earth.
4. __________ is also a natural resource.
5. Oil, coal, and natural gas are __________ resources.
6. Sunlight, wind, and water are __________ resources.
7. People use a __________ to get electrical energy from sunlight.
8. A __________ produces electricity when its blades turn.
9. Using less energy, reusing, and __________ help conserve natural resources.
10. __________ natural resources helps reduce environmental pollution gradually.
Worked Examples
Ex. Sunlight is a __________ resource.
Sol: Sunlight is found in nature = natural
Ans. natural
Sol: Sunlight is found in nature = natural
Ans. natural
Ex. Glass is a __________ resource.
Sol: Glass is made by people = man-made
Ans. man-made
Sol: Glass is made by people = man-made
Ans. man-made
Ex. Oil is a __________ resource.
Sol: Oil is available in a restricted amount = limited
Ans. limited
Sol: Oil is available in a restricted amount = limited
Ans. limited
Ex. Wind can be used as a __________ resource.
Sol: Wind can be replaced or reused = renewable
Ans. renewable
Sol: Wind can be replaced or reused = renewable
Ans. renewable
Ex. People use a __________ to get electrical energy from sunlight.
Sol: Device for getting electrical energy from sunlight = solar panel
Ans. solar panel
Sol: Device for getting electrical energy from sunlight = solar panel
Ans. solar panel
Answer Key: 1. natural; 2. man-made; 3. minerals; 4. fossil fuel; 5. limited; 6. renewable; 7. solar panel; 8. wind turbine; 9. recycling; 10. conserving
8. Exercise 3 - Synonyms and Antonyms
Instruction: Read each word and write the suitable synonym or antonym.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (REE-sors) | Something used for support or help. | support; help | — | Resources can be classified into two types. |
| natural (NATCH-er-ul) | Found in nature. | found; environmental | man-made; artificial | Sunlight and soil are natural resources. |
| man-made (MAN-mayd) | Made by people. | made; human-made | natural | Paper and glass are man-made resources. |
| limited (LIM-it-id) | Available in a restricted amount. | restricted; finite | unlimited; renewable | Oil and coal are limited resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | replaced; reused | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | choice; substitute | — | Renewable resources can be used as alternative resources. |
| conserve (kun-SURV) | To protect and use carefully. | save; protect | waste; misuse | We should conserve natural resources. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | discard; waste | We can conserve natural resources by reusing and recycling things. |
| depend (di-PEND) | To need or rely on something. | rely; need | avoid; reject | People depend on natural resources to make new things. |
| demand (di-MAND) | The amount of something that people need or want. | need; requirement | supply | The demand for natural resources is increasing. |
Choose the Correct Word
- Write a synonym of resource: __________
- Write an antonym of natural: __________
- Write a synonym of limited: __________
- Write an antonym of renewable: __________
- Write a synonym of alternative: __________
- Write an antonym of conserve: __________
- Write a synonym of recycle: __________
- Write an antonym of depend: __________
- Write a synonym of demand: __________
- Write an antonym of increasing: __________
Ex. Write a synonym of limited.
Sol: limited = restricted = finite
Ans. restricted
Ans. restricted
Ex. Write an antonym of natural.
Sol: natural = not man-made
Ans. man-made
Ans. man-made
Ex. Write a synonym of conserve.
Sol: conserve = protect = save
Ans. protect
Ans. protect
Ex. Write an antonym of depend.
Sol: depend = rely on something
opposite of rely = avoid
Ans. avoid
opposite of rely = avoid
Ans. avoid
Ex. Write a synonym of demand.
Sol: demand = need = requirement
Ans. need
Ans. need
Answer Key
1. support; 2. man-made; 3. restricted; 4. non-renewable; 5. choice; 6. waste; 7. reuse; 8. avoid; 9. need; 10. decreasing
9. Exercise 4 - Make Sentences
Read each word and write a meaningful sentence. Use the model sentences for guidance.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resources (REE-sors) | Things used for support or help. | support; help | — | People use resources to meet their needs. |
| classified (KLASS-uh-fyd) | Put into groups. | put into groups; arranged | — | Resources are classified into natural and man-made resources. |
| sunlight (SUN-lyt) | Light that comes from the Sun. | — | — | Solar panels get energy from sunlight. |
| minerals (MIN-er-ulz) | Natural substances found in the earth. | — | — | Minerals are also natural resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | choice; substitute | — | Wind is an alternative energy resource. |
| conserve (kun-SURV) | To protect and use carefully. | save; protect | waste; misuse | We should conserve natural resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | replaced; reused | non-renewable | Water is a renewable resource. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | discard; waste | We can recycle things to conserve resources. |
Answer Key: Model Sentences
1. resources — People use resources to meet their needs.
2. classified — Resources are classified into natural and man-made resources.
3. sunlight — Solar panels get energy from sunlight.
4. minerals — Minerals are also natural resources.
5. alternative — Wind is an alternative energy resource.
6. conserve — We should conserve natural resources.
7. renewable — Water is a renewable resource.
8. recycle — We can recycle things to conserve resources.
2. classified — Resources are classified into natural and man-made resources.
3. sunlight — Solar panels get energy from sunlight.
4. minerals — Minerals are also natural resources.
5. alternative — Wind is an alternative energy resource.
6. conserve — We should conserve natural resources.
7. renewable — Water is a renewable resource.
8. recycle — We can recycle things to conserve resources.
Ex. Make a sentence with resources.
Sol: Word = resources
Meaning = things used for support or help
Sentence = People use resources to meet their needs.
Ans. People use resources to meet their needs.
Ex. Make a sentence with sunlight.
Sol: Word = sunlight
Meaning = light from the Sun
Sentence = Solar panels get energy from sunlight.
Ans. Solar panels get energy from sunlight.
Ex. Make a sentence with minerals.
Sol: Word = minerals
Meaning = natural substances in the earth
Sentence = Minerals are also natural resources.
Ans. Minerals are also natural resources.
Ex. Make a sentence with conserve.
Sol: Word = conserve
Meaning = protect and use carefully
Sentence = We should conserve natural resources.
Ans. We should conserve natural resources.
Ex. Make a sentence with recycle.
Sol: Word = recycle
Meaning = process and use things again
Sentence = We can recycle things to conserve resources.
Ans. We can recycle things to conserve resources.
10. Vocabulary MCQ (1-10)
Meanings of Chapter Words
1. What does classified mean in the chapter?
A. Put into groups
B. Used for energy
C. Found in water
D. Made from glass
Sol: [A] Classified means put into groups, such as natural and man-made resources.
2. Which word means “a substance used to produce energy”?
A. Panel
B. Fuel
C. Soil
D. Timber
Sol: [B] Fuel is used to produce energy.
3. What is an alternative resource?
A. Another choice used instead
B. A resource that is always limited
C. A thing made only from paper
D. A thing found only underground
Sol: [A] An alternative is another choice used instead of something else.
4. In the sentence “People depend on natural resources,” depend means—
A. avoid
B. rely on
C. replace
D. classify
Sol: [B] To depend on something is to need or rely on it.
Renewable and Non-renewable Resources
5. Which word describes a resource that can be replaced or reused?
A. Fossil
B. Renewable
C. Limited
D. Electrical
Sol: [B] Renewable resources can be replaced or reused.
6. What does non-renewable mean in the chapter?
A. Able to grow quickly
B. Unable to be replaced within a short time
C. Made by people
D. Used to make glass
Sol: [B] Oil, coal, and natural gas are non-renewable because they cannot be replaced within a short time.
7. Which word means “available only in a restricted amount”?
A. Limited
B. Natural
C. Renewable
D. Alternative
Sol: [A] Limited means available only in a restricted amount.
Wise Use of Resources
8. Choose the sentence that uses conserve correctly.
A. We should conserve natural resources.
B. We should conserve the wind into a turbine.
C. We should conserve a new house from glass.
D. We should conserve the Sun to make soil.
Sol: [A] Conserve means to protect and use carefully.
9. What does recycle mean?
A. To process and use things again
B. To burn all natural resources
C. To find fossil fuel underground
D. To turn wind into soil
Sol: [A] Recycling means processing and using things again.
10. In “The demand for natural resources is increasing,” what does demand mean?
A. The amount people need or want
B. The movement of air
C. A flat energy device
D. The remains of old living things
Sol: [A] Demand is the amount of something that people need or want.
11. Quick Revision List
Review these chapter words quickly before an assessment.
| Word (Pronunciation) | Meaning | Synonyms | Antonyms | Example Sentence |
|---|---|---|---|---|
| resource (REE-sors) | Something that people can use for support or help. | support; help | — | Resources can be classified into two types. |
| natural (NATCH-er-ul) | Found in nature. | — | man-made | Sunlight, soil, water, air, plants, and animals are natural resources. |
| man-made (MAN-mayd) | Made by people. | made; artificial | natural | Paper, plastic, and glass are man-made resources. |
| limited (LIM-it-id) | Available only in a restricted amount. | restricted; finite | unlimited | Oil, coal, and natural gas are limited resources. |
| renewable (ree-NOO-uh-bul) | Able to be replaced or reused. | reusable; replaceable | non-renewable | Sunlight, wind, and water are renewable resources. |
| alternative (awl-TUR-nuh-tiv) | Another choice used instead of something else. | choice; substitute | — | Renewable resources can be used as alternative resources. |
| conserve (kun-SURV) | To protect and use carefully. | save; protect | waste | We should conserve natural resources. |
| recycle (ree-SY-kul) | To process and use things again. | reuse; use again | discard | We can conserve natural resources by reusing and recycling things. |
| classified (KLASS-uh-fyd) | Put into groups. | grouped; sorted | mixed | All these things can be classified into natural things and man-made things. |
| sunlight (SUN-lyt) | Light that comes from the Sun. | sunshine; solar light | — | People use solar panels to get electrical energy from sunlight. |
| soil (soyl) | The upper layer of earth in which plants grow. | earth; ground | — | Soil is a natural resource. |
| minerals (MIN-er-ulz) | Natural substances found in the earth. | earth substances; ores | — | Minerals are also natural resources. |
| fossil fuel (FOS-uhl FYOO-uhl) | Fuel from very old living things found in the earth. | fuel; energy source | — | Fossil fuel is a natural resource. |
| non-renewable (non-ri-NOO-uh-bul) | Unable to be replaced within a short time. | finite; exhaustible | renewable; replaceable | Oil, coal, and natural gas are non-renewable resources. |
| solar panel (SOH-lar PAN-uhl) | A flat device that gets electrical energy from sunlight. | panel; energy device | — | People use solar panels to get electrical energy from the sunlight. |
| wind turbine (WIND TUR-byn) | A machine whose blades turn in wind to produce electricity. | turbine; machine | — | When the wind turns the blades of a wind turbine, electricity is produced. |
Revision words included: 15.
◆ Key Points
- Resources are things that people can use for support or help.
- Resources are classified into natural resources and man-made resources.
- Natural resources are found in nature and people cannot make them.
- Sunlight, soil, water, air, plants, and animals are natural resources.
- Minerals and fossil fuel are also natural resources.
- Man-made resources are made by people using natural resources.
- Oil, coal, and natural gas are non-renewable and limited resources.
- Renewable resources can be replaced or reused.
- Sunlight, wind, and water can be used as alternative resources.
- Solar panels get electrical energy from sunlight.
- Wind turbines produce electricity when wind turns their blades.
- Using less energy, reusing, and recycling help conserve natural resources.