1. 1. Which of these is an example of potential energy changing to kinetic energy? A A roller coaster car pauses at the top of a hill and then rolls down. B A driver stops her car at a stoplight. C One horse runs faster than another horse. D A skier rides a chairlift to the top of a mountain.

2. 2. Most objects that give off light also give off A heat. B sound. C electricity. D mechanical energy.

3. 3. Something that makes a loud sound vibrates. A. at a high frequency
3. Something that makes a loud sound vibrates A at a high frequency. B at a low frequency. C with a lot of energy. D with a little energy.

4. 4. You buy a white shirt. Which of these is true about the shirt. A
4. You buy a white shirt. Which of these is true about the shirt? A The shirt refracts any light that hits it. B The shirt reflects white light only. C The shirt reflects all colors of light. D The shirt absorbs all colors of light.

5. 5. In what form does energy from the sun travel to Earth? A thermal B light C heat D electrical

6. 6. Look at the picture. What must happen for this shadow to form. A
6. Look at the picture. What must happen for this shadow to form? A Light must travel through the tree. B Light must travel around the tree. C Light must be blocked by the tree. D The tree must give off light.

7. 7. How does light travel. A. in straight lines. B
7. How does light travel? A in straight lines B in all directions toward the source C in diagonal lines D in waves

8. 8. Which of these objects absorbs all colors of light? A tire of a car B stem of a plant C cloud in the sky D leaf of a tree

9. 9. Which of the following best demonstrates potential energy. A
9. Which of the following best demonstrates potential energy? A a rolling ball B a moving car C a running boy D a sleeping cat

10. 10. Look at the illustration below What is the bee doing to the flower? A Pollinating it. B Eating its fruit. C Germinating it. D Scattering its seeds.

11. 11. After taking a walk through a field, Jan picked burs off her socks and dropped them. What did she do by dropping the burs? A She pollinated a plant. B She did nothing important. C She left food for animals that live in the field. D She helped to scatter a plant’s seeds.

12. 12. How can you classify a rosebush? A as a plant that makes spores B as a flowering plant C as a non-flowering plant D as a plant that makes cones

13. 13. How do leaves help plants. A. They hold the plant up. B
13. How do leaves help plants? A They hold the plant up. B They take in water from the soil. C They help make food through photosynthesis. D They help make seeds.

14. 14. Where in a plant can you find tubes that move nutrients from the roots to the leaves? A bark B stem C leaf D flower

15. 15. Look at the picture. The picture shows the young plant that begins to grow after a seed germinates. What is this young plant called? A conifer B fruit C pollen D seedling

16. 16. How are flowering and coniferous plants alike. A
16. How are flowering and coniferous plants alike? A They begin the life cycle with a seed that germinates. B They have roots that grow up and a stem that grows down. C They grow flowers. D They end the life cycle when seeds fall from cones.

17. 17. Some plants make cones. Other plants make flowers
17. Some plants make cones. Other plants make flowers. What is the purpose of flowers and cones? A They move water and food throughout the plant. B They hold the plant in the soil so that it does not blow over in heavy winds. C They make seeds so that the plant can reproduce. D They take in water and nutrients from the soil.

18. 18. What is the function of roots. A. to take in gases from the air. B
18. What is the function of roots? A to take in gases from the air B to move materials from the leaves to other parts of the plant C to take in water and nutrients from the soil D to make food for the plant

19. 19. Leaves use energy from the sun to make food for a plant
19. Leaves use energy from the sun to make food for a plant. What else do leaves need to make food? A water and phosphorus B carbon dioxide and water C phosphorus and nitrogen D carbon dioxide and nitrogen

20. 20. A seed starts to grow into a new plant. What is this process called? A pollinating B forming fruit C making food D germinating

21. 21. What kind of tree grows cones to make seeds. A. flowering. B
21. What kind of tree grows cones to make seeds? A flowering B deciduous C coniferous D fibrous

22. 22. Look at the pictures. What do these two structures have in common
22. Look at the pictures What do these two structures have in common? A They both are found on plants that lose all of their leaves in the fall. B They both produce spores. C They both produce seeds. D They both grow only on plants that have woody stems.

23. 23. How would you classify a magnolia tree and a fern. A
23. How would you classify a magnolia tree and a fern? A A magnolia tree is a nonflowering plant and a fern is a flowering plant. B A magnolia tree is a flowering plant and a fern is coniferous. C A magnolia tree is a flowering plant and a fern is a nonflowering plant. D A magnolia tree is coniferous and a fern is a nonflowering plant.

24. 24. What do sea jellies, earthworms, and spiders have in common. A
24. What do sea jellies, earthworms, and spiders have in common? A They all have eight legs. B They all have stingers. C They all have backbones. D They do not have backbones.

25. 25. Which is an example of an inherited trait. A. pierced ears. B
25. Which is an example of an inherited trait? A pierced ears B dyed hair C green eyes D broken arm

26. 26. What is a vertebrate. A. an animal that has a backbone. B
26. What is a vertebrate? A an animal that has a backbone B an animal that does not have a backbone C an animal that has live births D an animal that has smooth, wet skin

27. 27. How would you classify this animal. A. amphibian. B. arthropod. C
27. How would you classify this animal? A amphibian B arthropod C worm D mollusk

28. 28. Matt falls and cuts his leg. It leaves a scar
28. Matt falls and cuts his leg. It leaves a scar. Which best describes the scar? A inherited behavior B acquired characteristic C inherited trait D learned behavior

29. 29. Which animal group includes cold-blooded vertebrates that have dry, scaly skin? A mammals B amphibians C reptiles D mollusks

30. 30. How are birds and mammals alike. A. They both hatch from eggs. B
30. How are birds and mammals alike? A They both hatch from eggs. B They both feed milk to their young. C They both breathe air through lungs. D They both have feathers.

31. 31. Tasha observes a bird. She takes notes
31. Tasha observes a bird. She takes notes The bird has a short, yellow beak and grey feathers I saw the bird land on a branch It poked a cactus needle into the tree trunk to get a caterpillar It ate the caterpillar Which characteristic or behavior is the most likely to be learned, not inherited? A Grey feathers B Short, yellow beak C Liking to eat caterpillars D Using a cactus needle to catch food

32. 32. A rattlesnake and a black widow spider both make poison
32. A rattlesnake and a black widow spider both make poison. Why might they be classified in different groups? A A rattlesnake has a backbone, and a spider does not. B A rattlesnake is an arthropod, and a spider is an amphibian. C A rattlesnake passes on traits to its offspring, but a spider does not. D A rattlesnake gives birth to live snakes, but a spider lays eggs.

33. 33. Scientists classify mammals, reptiles, and _____ as vertebrates. A
33. Scientists classify mammals, reptiles, and _____ as vertebrates. A anthropods B mollusks C worms D fish

34. 34. Which best describes a chimpanzee's use of a stick as a tool. A
34. Which best describes a chimpanzee's use of a stick as a tool? A An acquired characteristic B An inherited characteristic C A learned behavior D An inherited behavior

35. 35. Which of the following is an example of an inherited behavior. A
35. Which of the following is an example of an inherited behavior? A A human child tying his shoelaces B A sea otter balancing a ball on its nose C A cat staying away from a house where it knows a dog lives D A baby bird opening its beak when its parent brings food

36. 36. Which of the following would be grouped as invertebrates, or animals without backbones? A Crab, earthworm, and grasshopper B Earthworm, snake, and lizard C Bumblebee, lobster, and angelfish D None of the other answer choices

37. 37. You use your five senses to. A. answer questions. B. infer answers
37. You use your five senses to A answer questions. B infer answers. C observe the world around you. D ask questions.

38. 38. Which of the following is a prediction you might make about the weather? A I wish it would snow. B It was sunny yesterday. C It is a beautiful day. D It is going to rain soon

39. 39. You want to conduct an experiment about the plants in your classroom. What would be your first step? A Gather materials. B Observe the plants. C Ask a question. D Analyze your results.

40. 40. When you estimate, you. A. need a tool. B. look up the answer. C
40. When you estimate, you A need a tool. B look up the answer. C make a careful guess. D measure exactly.

41. 41. What is a hypothesis. A. a question. B. a kind of model. C
41. What is a hypothesis? A a question B a kind of model C an investigation D a possible answer

42. 42. A girl with a sled climbs to the top of a snowy hill
42. A girl with a sled climbs to the top of a snowy hill. At the top of the hill, she sits on the sled, leans forward, and then slides down the hill. How does energy change as the girl climbs the hill and then sleds down?

43. 43. Name a classroom object in which you can see your reflection and another object that does not produce your reflection. Tell what causes the difference.

44. 44. Jake was worried. He wanted to plant seeds, but he did not know which direction to plant them so that the roots would grow down into the soil. Explain why Jake should not worry about this when he plants his seeds.

45. 45. Describe three traits of animals in the mammal group.