When one end of a steel rod is held in a flame, the other end of the rod

1. When one end of a steel rod is held in a flame, the other end of the rod gets hot. This happened because steel ____________. • makes its own heat • is a good conductor of heat • makes the flame hotter • keeps cold away from the flame

2. B. is a good conductor of heat

3. Christine was in a hurry to cool a bottle of water. She placed the glass bottle in the freezer and then forgot about it. The next day she ______________. • took the cold bottle of water from the freezer • and drank it. • found the water was frozen and the lid on the • bottle was hard to remove. • found the water froze and contracted. There • seemed to be less water than when she put the • bottle in the freezer. • found the water froze, expanded, popped the • lid and broke the glass bottle.

4. found the water froze, expanded, popped the • lid and broke the glass bottle.

5. In order for heat to travel by conduction, a warm object _____________. • warms air that carries the heat to another • cooler object • must be far away from the cool object it • is warming • must be near a cooler object to warm it • must touch a cooler object to warm it

6. D. must touch a cooler object to warm it

7. When will a metal spoon get too hot to touch? • When picked up from the kitchen counter • When placed in an empty pot on the kitchen • counter • When placed in a pot of cool water for a few • minutes • When placed in a pot of hot water for a few • minutes

8. When placed in a pot of hot water • for a few minutes

9. Molly wanted to find something in the kitchen at home that produced heat. Which one of the following objects did she find that produced useful heat? • Refrigerator • Clock • Stove • mixer

10. C. Stove

11. Which is the best and safest way to stop a fire in a frying pan from burning? • Smother it with a blanket. • Use a fire extinguisher. • Pour water on it. • Cover it with salt or sand.

12. D. Cover it with salt or sand.

13. What is the boiling point? • 32 degrees F • 98.6 degrees F • 212 degrees F • 100 degrees F

14. C. 212 degrees F

15. Fire safety instructors say that if clothing catches on fire, “drop and roll” or use a fire blanket. What will happen as a result of these instructions? • The fire will be smothered and can • no longer burn. • B. The fire will spread to some other • area and off of the person. • C. The person can roll away from the fire. • D. The fire will be insulated.

16. The fire will be smothered and can no • longer burn.

17. Maria wants to do an experiment about animals. She gets three jars and covers one with feathers, one with scales, and one with fur. She put ice cream in each jar. Maria found out that the ice cream stayed frozen the longest in the jar covered with fur. What did Maria learn about the skin coverings of animals? • Animals with fur can’t eat ice cream. • Animals with fur can keep warm best. • Scales don’t protect animals from enemies. • Fur is bad for animals who are cold-blooded.

18. B. Animals with fur can keep warm best.

19. A student fills two pans with water. One pan is put outside in the sun. The other pan is placed in the shade. Soon the pan in the sun had no water left in it. What causes this to happen? A. The sun warmed the water. B. The wind was blowing C. The water was moving. D. Evaporation can’t happen in the shade.

20. A. The sun warmed the water.

21. Mr. Ross’s science class is doing an experiment. Each student fills a plastic cup with ice and cold water. They let it sit on their desks while they go to lunch. When the students return, they notice that the outsides of their cups are wet. What has happened when drops of water form on the outside of a cup of water? A. precipitation B. evaporation C. condensation D. leaking

22. C. condensation

23. Anything that gives off heat is a source of heat. The major source of heat for the Earth is _______________. A. the moon B. the sun C. fire D. electricity

24. B. the sun

25. Burt used a spoon to stir soup that was cooking on the stove. Which spoon will stay the coolest while he stirs? A. an iron spoon B. an aluminum spoon C. a wooden spoon D. a silver spoon

26. C. a wooden spoon

27. What causes matter to change states? A. energy from the air B. energy from water C. energy from heat D. energy from your brain

28. C. energy from heat

29. The scouts camped in tents. At midnight Brian heard some noises. He turned on his flashlight. The noises stopped. In the morning Brian found that the cooler was open. Some candy bars were gone. These prints were on the ground. What could Brian infer about the noises? A. It was made by the wind. B. Someone was playing a joke. C. A bear opened the cooler. D. There are raccoons in the forest.

30. C. A bear opened the cooler.

31. What does predict mean? A. to guess B. to tell what might happen in the future C. to observe D. to give a scientific answer

32. B. To tell what might happen in the future

33. Predict what would happen if you never did your homework. A. Your grades would drop. B. Your parents would be angry. C. You wouldn’t learn very much. D. All of the above.

34. D. All of the above.

35. Conner tested 3 different brands of paper towels to see which one absorbs the most water. What can you conclude from looking at the bar graph below? A.Brand 1 holds the most. B. Brand 2 holds the most. C. Brand 3 holds the most. D. They all hold the same amount.

36. A. Brand 1 holds the most.

37. While at recess, you find an empty potato chip bag. What inference can you make? A. The bag is wrinkled. B. Someone left the bag after a picnic. C. There are 10 ants on the bag. D. The wind will blow the bag away.

38. B. Someone left the bag after a picnic.

39. Debbie is watching a nest of baby birds. The birds have become so large that they do not have enough room in the nest. Use this information to make a prediction. A. The birds will stay healthy. B. Soon the birds will learn to fly and leave the nest. C. The mother bird will move the babies to a new nest. D. The mother bird has stopped feeding the babies.

40. Soon the birds will learn to fly • and leave the nest.

41. In a scientific experiment, what is the first thing you should do after asking the question? A. make a hypothesis B. collect data C. design your experiment D. construct a graph

42. A. Make a hypothesis

43. Which unit of measure would be best to measure cough medicine? A. liter B. milliliter C. second D. kilogram

44. B. milliliter

45. Which do scientists use to measure the amount of a liquid? A. balance B. thermometer C. graduated cylinder D. ruler

46. C. Graduated cylinder

47. The objects below can be classified by solids and liquids. Which two things can be classified together? A. 2 and 5 B. 3 and 4 C. 1 and 5 D. 4 and 5

48. D. 4 and 5

49. Which device would probably be used to measure the temperature of the water in a swimming pool? A. measuring tape B. scale C. thermometer D. graduated cylinder

50. C. thermometer