Cet Science Sem 2 G7 Fixed.docx

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FINAL TEST SCIENCE / SEMESTER 2 / 2018-2019 Name : __________________

Grade : 7

Date : __________________

Cross the correct answer! 1. The place in the environment where the animals (or plants) live is called ... a. Ecosystem b. Population c. Habitat 2. The rock-pool habitat is suitable for small sea animals below, except... a. Crabs b. Starfish c. Rabbit 3. We can found giraffes in the... a. Grasslands b. Tropical rain forest c. North polar 4. Adaptation is … a. A place where an organism lives b. characteristic that improves the organism's ability to survive.

d. Organism d. Limpets d. Sea

c. stage in an animal's life cycle. d. characteristic the prevents an organism's ability to survive. 5. An octopus can change its color to match its surroundings. This is an example of which type of behavior? a. Camouflage b. cooperative behavior c. mimicry d. estivation 6. Anything that dirties or harms the environment is called... a. Recycling b. Deforestation c. Pollution d. Population 7. A giraffe's ecosystem is found throughout Africa. Giraffes eat leaves off of tall trees. They may eat veggies or fruits on occasion. Giraffes will never hunt or eat other animals. Which of the following best describes giraffes? a. Herbivore b. Decomposer c. Omnivore d. Carnivore 8. The sequence of transfers of matter and energy in the form of food from organism to organism is… a. Food chains c. Ecological structure b. Chemical energy d. Food Pyramid 9. Food chains contain three types of organisms. Which one is NOT part of the food chain? a. Producer c. Carpenter b. Consumer d. Decomposer 10. Which the secondary consumer in this food chains ?

11.

12. 13.

14.

a. Grass b. Frog c. Insect Plants always be a producer, because …. a. they produce energy for the ecosystem b. they don't produce energy c. they help put nutrients back into the soil for plants to eat d. they helps carnivore for life …… is an example of decomposer a. Fish b. Plant c. Bacteria What is the producer of food chains? a. an organism that gets energy from eating other organisms b. an organism that gets energy from eating dead organisms, non-living material or waste c. an organisms that uses sunlight to make its own food d. an organism that uses chemical energy to make its own food Use the diagram to answer the question. The Mayfly is a food source for which 3 organisms

d. Snake

d. Seaweed

15. 16. 17.

18. 19. 20. 21. 22.

23. 24. 25.

26. 27.

28. 29. 30.

31.

32.

a. Frog, Dragon Fly and snake c. Frog, salamander and trout b. Frog, trout and dragon fly d. Frog and phytoplankton What are animals at the top of the food chain called? a. Omnivores b. Producers c. Decomposers d. Primary consumers Animals with an internal skeleton made of bone are called .... a. Mammals b. Vertebrates c. Invertebrates d. None What is an invertebrate? a. An animal with a backbone c. An animal without a backbone b. a mammal d. birds Which animal below is a mammal? a. Turtle b. Pelican c. Snake d. bear My body is warm and covered in feathers. I lay eggs which hatch into chickens. What am I? a. Reptile b. Mammal c. Amphibian d. Bird There are categories of vertebrates. Which one is not a vertebrate? a. Mammals b. Arthropods c. Birds d. Reptiles All insects have .... legs. a. 6 b. 10 c. 8 d. 2 The only group of animals that begin their lives breathing through gills in the water and as adults can live on land breathing with lungs a. Amphibians b. mammals c. arthropods d. fish Which of the following has an exoskeleton? a. Foxes b. Lobsters c. Birds d. Fish Which of the following is an example of a arthropod? a. Squid b. earth worm c. crab d. shark The scientific name for an organism is made from the .... a. class and family name c. domain and kingdom name b. genus and species name d. kingdom and phylum name The sun gives off energy in the forms of light and heat. This is called ... energy. a. water b. wind c. solar d. nuclear Which of the following is an example of a renewable energy source? a. Gasoline b. solar power c. coal d. all answers are correct The following are some kinds of fuels that produce carbon dioxides when burnt, except .... a. Coal b. oil c. gas d. petrol Which of the following cause global warming? a. Sulfur dioxide b. Acid rain c. carbon dioxide d. oxygen Which one of the following result takes place due to global warming? a. Maintaining steady temperature c. Changes in the temperature b. Pleasent environment d. Causing less polution Which of the following best describes renewable energy? a. Energy from fossil fuels b. Energy that is generated by burning up something c. An energy that is not used up d. None of the above Why is developing renewable energy important to life on Earth? a. Renewable energy sources will be used up and gone forever b. Other energy sources can last forever c. Renewable energy produce more pollution d. We will run out of energy

33. What type of renewable energy comes from building dams on rivers? a. Wind power c. Geothermal energy b. Hydropower d. Wave and Tidal power 34. What type of renewable energy comes from capturing the power of the sun’s rays? a. Wind power c. Geothermal energy b. Hydropower d. Wave and Tidal power 35. What type of renewable energy comes from the power of the ocean? a. Wind power c. Geothermal energy b. Hydropower d. Wave and Tidal power 36. What type of renewable energy is generated by wind turbines? a. Wind power b. Solar power c. Biomass energy d. Geothermal energy 37. What type of renewable energy comes from burning plants? a. Wind power b. Solar power c. Biomass energy d. Geothermal energy 38. What are large windmills used for generating electricity called? a. Electric fans b. Winder c. Energy mills d. Wind turbines 39. CFCs are responsible for : a. creating smog b. auroras c. global warming d. creating ozone hole 40. Which of the following is a greenhouse gas? a. Carbon dioxide b. nitrogen c. oxygen d. argon 41. Acid rain is caused by emissions of .... a. Sulphur dioxide b. nitrogen oxide c. both (a) and (b) d. carbon dioxide 42. Sulphur dioxide is produced by .... a. lightning strikes b. volcanic eruptions c. gasoline engine d. all answers are correct 43. The adverse effect (s) of acid rain is (are) .... a. causing paint to peel b. corrosion c. killing insect d. all answers are correct 44. Which of the following power station produce sulphur dioxide? a. coal firing power station c. hydroelectric power plants b. nuclear power plant d. all answers are correct 45. Where is the ozone layer located? a. In the top layer of the ocean where fish live c. High in the Earth’s atmosphere b. Around the equator d. It surrounds the sun 46. Why is the ozone layer important? a. It helps to provide food for ocean bacteria b. It prevents hurricanes from forming c. It slows down global warming d. It absorbs ultraviolet rays from the sun that can cause skin cancer 47. What type of compounds can damage the Earth’s ozone layer? a. Chlorofluorocarbons b. carbon dioxides c. pesticides d. fluorides 48. Where do CFCs come from? a. Aerosol cans b. Air conditioners c. Refrigerators d. all answer are correct 49. The ozone hole is a phenomenon that has occured over : a. Over the United States c. Over Africa and China b. Over Europe d. Over Antartica 50. What should you do to protect yourself from the harmful rays of the sun? a. wear sunglasses b. wear sunscreen when outside c. stay in the shade or keep your skin covered when outside d. all of the above