Unit 10: Planet Earth

Trường THCS Đỗ Đăng Tuyển, TP Đà Nẵng, 2024 - 2025

I. Mark A, B, C or D on the word whose underlined part differs from the other two in pronunciation.

1. A. affect                   B. change                  C. balance

2. A. climate                 B. habitat                   C. landform

3. A. essential               B. planet                    C. recognize

4. A. sauna                   B. flora                      C. nature

5. A. scientist                    B. continent               C. coastline

II. Choose the word whose main stressed syllable is placed differently from the others.

1. A. reserve                     B. moonquake               C. climate

2. A. continent              B. essential                    C. temperate

3. A. system                 B. surface                      C. bamboo

4. A. Mercury                B. establish                    C. pesticide

5. A. mankind               B. plateau                      C. giraffe

III. Circle the best option to indicate the correct answer to the following sentences.

1. Different animals and plants live in different types of ______.

A. affect                       B. habitats                     C. balance

2. Our ______ consists of stars, the Sun, and everything bound to it by gravity.

A. solar system            B. outer space                         C. polar region

3. The cycle of seasons brings major changes, ______ requires animals to adapt.

A. whose                      B. who                                     C. which

4. To keep the ecologies on Earth in ______, we need to protect natural resources.

A. reserve                    B. balance                     C. protection

5. ______ can exist under water in the form of mountain ranges.

A. climate change         B. habitat loss                          C. landforms

6. Mother Earth ______ us with air to breathe, water to drink, and food to eat.

A. keeps                       B. protects                     C. provides

7. Mi: "______"             Nick: "OK. That’s a good idea."

A. How would you feel about raising funds for the homeless?

B. How to raise funds for the homeless?

C. What can you do to raise funds for the homeless?

8. The South ______ is the southernmost point on Earth.

A. surface                     B. pole                                     C. landforms

9. ______ are areas where flora and fauna are reserved and managed for conservation.

A. Nature reserves       B. Global warming         C. Bamboo forest

10. ______ animals can cause ecological imbalances in Earth’s ecology.

A. Grazing                    B. Preserving                           C. Hunting

11. Orange trees and cactuses are both flowering plants, ______ have seeds that grow flowers.

A. who                          B. which                        C. whose

12. One way to ______ people’s awareness of the need to protect our Earth is to follow the 3Rs.

A. rise                          B. preserve                    C. raise

13. Planet Earth, which is also called the Blue Planet, is covered ______ water and land.

A. over                         B. with                                     C. up

14. We can keep a(n) ______ balance by stopping hunting and cutting down trees.

A. ecological                           B. ecologist                    C. ecologically

15. Many human activities cause ______, which is also called habitat destruction.

A. climate change         B. habitat loss                          C. ecological balance

16. A naturalist, ______ studies the natural world, often makes observations of the relationships between organisms and their environment.

A. what                         B. which                        C. who

17. People love and appreciate the natural ______, the relaxed feeling in green spaces and water areas.

A. beautiful                   B. beautifully                  C. beauty

18. Humans are cutting down too many trees on Earth, ______ lungs are jungles and forests.

A. whose                      B. which                        C. who

19. Scientists use the Hubble Space Telescope, ______ began orbiting Earth in 1990, to observe and take pictures of planets.

A. whose                      B. which                        C. who

20. Animals ______ are fertilizers for plants.

A. droppings                           B. dropping                    C. drops

21. The Soviet Union launched Sputnik 1 ______ outer space in 1957.

A. into                          B. on                             C. at

22. Arctic Ocean ice and water make ______ a habitat for polar bears, whose main food is seals.

A. in                             B. of                              C. up

23. When humans use a natural habitat for farming and housing, they cause habitat ______.

A. loose                        B. lose                                     C. loss

24. Mi: "Why don’t you lend him some books?"                Tom: "______"

A. What do you want him to do?  B. I don’t agree with you.   C. I’ll think about that.

IV. Circle a mistake in each sentence.

25. Global warming, what is the increase in temperature in the atmosphere, is a worldwide concern.

       A                    B                                                         C

26. The flora and fauna, who are plants and animals, are under serious threat.

                                      A                           B                                  C

27. Animals need shelter, where is a safe place to live and grow.

                     A               B                        C

28. The Britain ecologist, who studies the relationship between living things and their environment, is now leading our research team.

              A                    B                                          C

V. Read the passage and do as directed.

Invasive species (loài xâm lấn) are the foreign plants or animals which come into a place and badly affect it. Invasive species can harm local living things and people's health.

In the 1970s, fish farmers brought silver carp into the United States with the hope to improve water quality in fish ponds. Many carp then escaped into the Mississippi River. They have gradually taken over the resources of paddlefish in the river. Their population have grown so rapidly that paddlefish don't have enough food and are dying out.

Water hyacinth (lục bình), which is native to South America, came to Africa in the 1980s. At First, people planted it for its beautiful purple flowers. Since then, the plant has spread very quickly and covered Lake Victoria, the largest lake in Africa. Water hyacinth blocks the flow of lake water and creates homes for mosquitoes and insects.

Since invasive species cause many types of problems, there should be stricter laws to stop people from taking plants and animals to a new place.

Decide if the following statements are True (T) or False (F).

1. Invasive species can bring benefits for local living things and people’s health.

2. Silver carp eat paddlefish in the Mississippi River.

3. Water hyacinth came to Africa in the 1980s.

4. Water hyacinth creates homes for mosquitoes and insects.

5. Which of the following is true about water hyacinth in Lake Victoria?

Answer the questions:

1. Why did fish farmers bring silver carp into the United States in the 1970s?

→ _________________________________________.

2. Did people plant Water hyacinth to block the flow of lake water at first?

→ _________________________________________.

—THE END—

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