Think-Pair-Share FCAT Practice

1. Think-Pair-Share FCAT Practice During this activity, students will have individual time to think about a question related to FCAT 2.0. They will then pair up with a partner to share their thoughts. Finally, the pairs will select one major explanation to share with the entire class.

2. Think Think about the answer options. Decide which answer you believe is correct and explain why the other options might be possible but incorrect. Write your explanations in your science journal: __________________________________________________________________________________________________________________________________________________________________________________________________________________

3. Pair Start a discussion with your partner(s) by asking him/her to explain their response to the “Think” part of this sheet (above). Combine your ideas and summarize your discussion in your science journal: __________________________________________________________________________________________________________________________________________________________________________________________________________________

4. Share Share with the whole class the most important points from your "Paired" discussion. To prepare for sharing, list below the most important point you would like to share with the entire class in your science journal: ____________________________________________________________________________________________________________________________________________________________________________________________________________

5. Practice Problems SC.7.P.11.2 Investigate and describe the transformation of energy from one form to another.

6. John’s mom works as a scientist as the Space Center. She tells John that a rocket requires a large amount of energy to launch. The required energy is generated by burning liquid fuel. Which type of energy is stored in the liquid fuel? • kinetic energy • thermal energy • chemical energy • electrical energy √heck the answer

7. ANS: C • is incorrect because the stored energy is converted to kinetic energy, but is not stored in the form of kinetic energy. • is incorrect because some of the energy would be converted to thermal energy, but the energy is not stored in the form of thermal energy. • is correct because liquid fuel has potential energy in the form of chemical energy. When the fuel is burned, the chemical energy is converted to other forms of energy including kinetic energy, light energy, thermal energy, and sound energy. • is incorrect because liquid fuel stores energy in the form of chemical energy, not electrical energy.

8. During a science experiment, students compress four springs and then release them. In which position would the greatest conversion of elastic energy to kinetic energy occur when the spring is released? • Position 1 • Position 2 • Position 3 • Position 4 √heck the answer

9. ANS: D • is incorrect because Position 4 shows greater compression than Position 1. The spring with the greatest compression will have the greatest elastic energy. • is incorrect because in Position 2, the spring is least compressed, giving it the lowest elastic energy. • is incorrect because Position 4 shows greater compression than Position 3. The spring with the greatest compression will have the greatest elastic energy. • D is correct because the spring has the greatest elastic energy when it is compressed the most.

10. Juan serves a tennis ball. He throws the tennis ball into the air and hits it with his racket when it reaches its highest point. Once he hits the ball, it moves forward and downward, eventually hitting the ground after it goes over the net. At which point is kinetic energy converted to gravitational potential energy? • just before Juan throws the ball • just after Juan throws the ball into the air • just after Juan hits the tennis ball • just before the tennis ball hits the ground √heck the answer

11. ANS: B • is incorrect because at this point, there is no conversion of energy. • is correct because at this point, the ball moves upward, so kinetic energy is being converted to gravitational potential energy. • is incorrect because at this point, the ball is moving forward and downward, so gravitational potential energy is being converted to kinetic energy. • is incorrect because at this point, the ball is moving forward and downward, so gravitational potential energy is being converted to kinetic energy.

12. Alonso is camping with his family. His torch runs on two batteries. Which type of energy is stored in the batteries? • light energy • thermal energy • chemical energy • electrical energy √heck the answer

13. ANS: C • is incorrect because the stored energy is converted to light energy, but it is not stored as light energy. • is incorrect because the stored energy is converted to thermal energy, but it is not stored as thermal energy. • is correct because a battery stores energy in the form of chemical energy. • is incorrect because the energy is stored in the form of chemical energy and then converted to electrical energy.

14. Rachel is cooking breakfast before she leaves for school. In which of the following electrical appliances is electrical energy converted to kinetic energy? • blender • oven • stove burner • toaster √heck the answer

15. ANS: A • is correct because an electric blender converts electrical energy to kinetic energy. The kinetic energy causes the blades to spin. • is incorrect because an electric oven converts electrical energy to thermal energy. • is incorrect because an electric stove burner converts electrical energy to thermal energy. • is incorrect because an electric toaster converts electrical energy to thermal energy and light energy.

16. Energy in a Roller Coaster Ride - See potential energy convert to kinetic energy in this interactive activity from WGBH that shows a roller coaster in action. Masses and Springs - In this interactive simulation adapted from the University of Colorado's Physics Education Technology project, hang various masses from different springs and see the kinetic, potential, and thermal energy of each spring system. You can even slow time or move your demonstration to another planet.

17. Practice ProblemsSC.7.P.10.4 Observe and describe that heat flows in predictable ways, moving from warmer objects to cooler ones until they reach the same temperature.

18. Joe places two solid objects in contact with each other. Which property determines the direction of the flow of heat between the two • material of the objects • volume of the objects • density of the objects • temperature of the objects √heck the answer

19. ANS: D • is incorrect because the direction of heat flow depends on the relative temperatures of the objects, not their materials. • is incorrect because the direction of heat flow depends on the relative temperatures of the objects, not their volumes. • is incorrect because the direction of heat flow depends on the relative temperatures of the objects, not their densities. • is correct the direction of heat flow depends on the relative temperatures of the objects. Heat flows from the warmer object to the cooler object.

20. Myra places two objects in contact. One object is warmer than the other object. Which type of heat transfer is she most likely testing? • conduction • convection • insulation • radiation √heck the answer

21. ANS: A • is correct because conduction is the transfer of heat between two objects that are in contact with each other. • is incorrect because convection is the transfer of heat caused by the movement of particles in a liquid or a gas. • is incorrect because insulation is a property of a material that makes it resistant to heat transfer. • is incorrect because radiation is the transfer of heat by electromagnetic waves and occurs without objects being in contact with each other.

22. Jeriah places two metal cubes in contact with each other. Energy as heat flows from Cube A to Cube B. What conclusion can you draw regarding Cube A? • It is larger than Cube B. • It is cooler than Cube B. • It is smaller than Cube B. • It is warmer than Cube B. √heck the answer

23. ANS: D • is incorrect because the direction of heat flow does not depend on the relative sizes of the cubes. • is incorrect because energy as heat would flow from Cube B to Cube A if Cube A is cooler than Cube B. • is incorrect because the direction of heat flow does not depend on the relative sizes of the cubes. • is correct because energy as heat flows from warmer objects to cooler objects. If heat flows from Cube A to Cube B, then Cube A must be warmer than Cube B.

24. Kirby leaves a beaker of water at 80 ° C to stand in a room with an air temperature of 20 ° C. He measures the temperature of the water in the beaker every five minutes. At what temperature will the water temperature stop decreasing? • 0 °C. • 20 °C. • 50 °C. • 80 °C. √heck the answer

25. ANS: B • is incorrect because the temperature of the water will decrease until it reaches the same temperature as the air. It will not drop below the temperature of the air. • is correct because the temperature of the water will decrease until it reaches the same temperature as the air. • is incorrect because the temperature of the water will decrease until it reaches the same temperature as the air. • is incorrect because the temperature of the water will decrease as heat energy flows from the water to the air.

26. Tran places a warm plate with a temperature of 60 °C on a bench that is at a temperature of 25 °C. After an hour, the plate and the bench are at the same temperature. Which of the following best describes what occurs during the hour? • The temperature of the plate stays the same, while the temperature of the bench increases to 60 °C. • The temperature of the bench stays the same, while the temperature of the plate decreases to 25 °C. • The temperature of the plate and the bench both decrease until they reach a temperature of 0 °C. • The temperature of the plate decreases to 30 °C, while the temperature of the bench increases to 30 °C. √heck the answer

27. ANS: D • is incorrect because heat energy will be transferred from the warm plate to the cooler bench, so the temperature of the plate would decrease. • is incorrect because heat energy will be transferred from the warm plate to the cooler bench, so the temperature of the bench would increase. • is incorrect because the temperature of the plate will decrease until it reaches the same temperature as the plate. • is correct because heat energy will be transferred from the warm plate to the cooler bench. The plate will become cooler, while the bench will become warmer.

28. Heat TransferIn this interactive activity adapted from the Wisconsin Online Resource Center, learn how heat can be transferred in one of three ways: conduction, convection, and radiation.