2. Mystery Detectives Physical Science

3. Question 1- Which question below will result in an experiment that can be tested reliably? *A. How does changing the height of a ramp affect the distance that a toy car travels?* *A. How does changing the height of a ramp affect the distance that a toy car travels?* *B. What is the freezing point of salt water? * *C. What is the mass of a beaker filled with 500 mL of water? * *D. How fast can a hummingbird flap its wings? *

4. Question 1- Which question below will result in an experiment that can be tested reliably? *A. How does changing the height of a ramp affect the distance that a toy car travels?* *A. How does changing the height of a ramp affect the distance that a toy car travels?*

5. Question 2 – Water vapor changes into liquid water through the process of— * A. evaporation * * A. evaporation * *B. condensation * *C. precipitation * *D. accumulation *

6. Question 2 – Water vapor changes into liquid water through the process of— *B. condensation *

7. Question 3 – What part does the sun play in the water cycle? *F. The sun causes ocean water to evaporate.* *G. The sun causes ocean water to disappear.* *H. The sun causes ocean water to condense.* *J. The sun causes ocean water to precipitate.*

8. Question 3 – What part does the sun play in the water cycle? *F. The sun causes ocean water to evaporate.*

9. Question 4 – How can most matter be changed from one state to another? *D. By adding or removing heat* *B. By mixing it with other types of matter* *A. By moving it to another container* *C. By changing its mass*

10. Question 4 – How can most matter be changed from one state to another? *D. By adding or removing heat*

11. Question 5 – What type of energy does the sun provide? *H. Solar* *J. Sound* *G. Lunar* *F. Electrical*

12. Question 5 – What type of energy does the sun provide? *H. Solar*

13. Question 6 – What causes droplets of water to form on the outside of a glass containing water and ice? *C. Water vapor in the air condenses when it cools.* *D. Water runs over the edge of the glass as the ice melts.* *B. Water vapor in the glass evaporates as it cools.* *A. The water seeps through the glass.*

14. Question 6 – What causes droplets of water to form on the outside of a glass containing water and ice? *C. Water vapor in the air condenses when it cools.*

15. Question 7 – Friction is produced by— * G. * G. lifting up a light object * * G. * G. lifting up a light object * * *F. pouring a thin liquid* *H. weighing a heavy object* *J. two surfaces rubbing together*

16. Question 7 – Friction is produced by— *J. two surfaces rubbing together*

17. Question 8 – Which of the following forces pulls a person jumping rope back to the Earth’s surface? *F. Pressure* *J. Gravity* *G. Inertia* *H. Friction*

18. Question 8 – Which of the following forces pulls a person jumping rope back to the Earth’s surface? *J. Gravity*

19. Question 9 – The process where a solid changes to a liquid is called— *C. melting * *A. freezing * *D. evaporating * *B. condensing *

20. Question 9 – The process where a solid changes to a liquid is called— *C. melting *

21. Question 10 – A student threw a ball into the air. It followed a curved path and soon fell to the ground because— *B. friction from the air slowed the ball down * *A. gravity changed the ball’s direction as friction from the air slowed it down * *C. the ball was not thrown very hard* *D. the ball was not thrown straight up into the air*

22. Question 10 – A student threw a ball into the air. It followed a curved path and soon fell to the ground because— *A. gravity changed the ball’s direction as friction from the air slowed it down *

23. Question 11 – What will happen to the amount of water in the beaker if the temperature of the water reaches 100°C? *A. The amount of water in the beaker will decrease. * *C. The amount of water in the beaker will stay the same. * *D. The amount of water in the beaker will not change. * *B. The amount of water in the beaker will increase. *

24. Question 11 – What will happen to the amount of water in the beaker if the temperature of the water reaches 100°C? *A. The amount of water in the beaker will decrease. *

25. Question 12 – Which of the following best explains what will happen if a teaspoon of salt and a teaspoon of sand is stirred into a beaker of hot water? *F. Some of the sand and the sugar will dissolve in the water.* *J. The salt will dissolve and the sand will sink to the bottom. * *G. Both the sand and the sugar will completely dissolve in the water. * *H. Neither the sugar nor the sand will dissolve in the water. *

26. Question 12 – Which of the following best explains what will happen if a teaspoon of salt and a teaspoon of sand is stirred into a beaker of hot water? *J. The salt will dissolve and the sand will sink to the bottom. *

27. Question 13 – A student has a mixture of sand and water in a jar. Which of the following tools would be used to separate the soil from the water? *A. A filter or a sieve* *B. A measuring cup* *C. A triple beam balance * *D. A hand lens *

28. Question 13 – A student has a mixture of sand and water in a jar. Which of the following tools would be used to separate the soil from the water? *A. A filter or a sieve*

29. Question 14 – Which of the following is caused by removing heat? *B. A liquid changes to a gas. * *A. A solid changes to a gas. * *D. A solid changes to a liquid. * *C. A liquid changes to a solid. *

30. Question 14 – Which of the following is caused by removing heat? *C. A liquid changes to a solid. *

31. Question 15 – A student hears the sound of a bell that means to change classes. Which of the following carries the sound of the bell to the student? *F. Electrical currents * *G. Vibrating air * *J. Magnetic signals * *H. Radio waves *

32. Question 15 – A student hears the sound of a bell that means to change classes. Which of the following carries the sound of the bell to the student? *G. Vibrating air *

33. Question 16 – Which object below will complete the circuit when placed where the X is? *B. A plastic bottle * *A. A metal paper clip * *C. A rubber band * *D. A wooden stick *

34. Question 16 – Which object below will complete the circuit when placed where the X is? *A. A metal paper clip *

35. Question 17 – All of the following are good insulators EXCEPT— *G. a paper clip * *F. a rubber eraser * *H. a piece of paper * *J. a plastic comb *

36. Question 17 – All of the following are good insulators EXCEPT— *G. a paper clip *

37. Question 18 – Which of the following would BEST reflect light? *J. Craft paper * *G. Aluminum foil * *F. Waxed paper * *H. Plastic wrap *

38. Question 18 – Which of the following would BEST reflect light? *G. Aluminum foil *

39. Question 19 – In which of the following examples is water vapor condensing? *J. Water drops forming on a leaf on a cool night * *J. Water drops forming on a leaf on a cool night * *F. Water leaking from a faucet * *G. Water in a freezer changing to ice * *H. A puddle of water evaporating on a very hot day *

40. Question 19 – In which of the following examples is water vapor condensing? *J. Water drops forming on a leaf on a cool night * *J. Water drops forming on a leaf on a cool night *

41. Question 20 – The force of gravity between two objects is greater when— *F. the distance between the two objects is greater * *G. the distance between the two objects is less * *J. the masses of the two objects are equal * *H. the friction between the two objects is greater *

42. Question 20 – The force of gravity between two objects is greater when— *G. the distance between the two objects is less *

43. Question 21– Ice changes to a liquid because it has reached its— *B. melting point * *A. boiling point * *D. condensation point* *C. freezing point*

44. Question 21– Ice changes to a liquid because it has reached its— *B. melting point *

45. Question 22 – When 5 g of sugar is mixed with 250 g of warm water, what will probably happen to the sugar? *D. The sugar will dissolve into the water. * *A. The sugar will sink to the bottom of the glass. * *C. The sugar and the water will separate into layers. * *B. The sugar will float on top of the water. *

46. Question 22 – When 5 g of sugar is mixed with 250 g of warm water, what will probably happen to the sugar? *D. The sugar will dissolve into the water. *

47. Question 23 – Steel cans are separated from aluminum cans at a recycling center. Which of the following is the BEST way to separate the steel from the aluminum? *G. Use an electromagnet to remove the steel cans. * *H. Put all the cans in water. * *J. Melt the cans and pour off the steel. * *F. Sort the cans by size. *

48. Question 23 – Steel cans are separated from aluminum cans at a recycling center. Which of the following is the BEST way to separate the steel from the aluminum? *G. Use an electromagnet to remove the steel cans. *

49. Question 24 – When water is frozen, it becomes a solid called ice. When water is boiled it becomes a gas called— *A. water drops * *C. water vapor * *B. a liquid * *D. a gassy state *

50. Question 24 – When water is frozen, it becomes a solid called ice. When water is boiled it becomes a gas called— *C. water vapor *

51. Question 25 – The two students pictured below can hear each other because the string— *H. vibrates* *F. stretches* *J. is long* *G. is strong*

52. Question 25 – The two students pictured below can hear each other because the string— *H. vibrates*

53. Question 26 – The circuit pictured below is not complete. In order for the bulb to light, a wire must be connected from — *G. Point A to Point C* *F. Point D to Point A* *J. Point C to Point D * *H. Point B to Point C*

54. Question 26 – The circuit pictured below is not complete. In order for the bulb to light, a wire must be connected from — *F. Point D to Point A*

55. Question 27 – The flower’s stem appears larger underwater because the water— *C. refracts light * *A. transmits light * *B. absorbs light * *D. reflects light *

56. Question 27 – The flower’s stem appears larger underwater because the water— *C. refracts light *

57. Question 28 – Which tool listed below could be used to measure exactly 40 mL of water? *J. A beaker * *F. A triple beam balance * *G. A metric ruler * *H. A thermometer *

58. Question 28 – Which tool listed below could be used to measure exactly 40 mL of water? *J. A beaker *

59. Question 29 – Water droplets forming on the outside of a cold glass is an example of — *F. evaporation* *H. condensation* *G. precipitation* *J. perspiration*

60. Question 29 – Water droplets forming on the outside of a cold glass is an example of — *H. condensation*

61. Question 30 - Which of these would best model how the sun’s energy warms the Earth? *A. a heat lamp keeping food warm* *B. a pot of water boiling on the stove* *C. an oven baking bread* *D. a spoon getting hot when stirring soup*

62. Question 30 - Which of these would best model how the sun’s energy warms the Earth? *A. a heat lamp keeping food warm*