2. Which One of These Objects Has the Most Heat Energy

àRead all questions carefully. Circle the number ten for one extra point. If you have a question, please ask. Good luck!

1. All forms of energy:

a. make a sound b. have the ability to make change c. can be eaten d. are visible to our eyes

2. Which one of these objects has the most heat energy:

a. Mrs. Coulter b. A computer c. A flashlight d. A whale

3. The diagram to the right shows atoms of 2 different objects. Circle which one is hotter.

4. Explain how could you tell that object was hotter? ______

àMatch each type of energy to an example that falls into its category.

5. Electromagnetic ______a. you hear a lion roar in the zoo

6. Thermal ______b. picking up your toothbrush to clean your teeth

7. Sound ______c. plants going through photosynthesis

8. Mechanical ______d. a bonfire in your background

9. Chemical ______e. getting an x-ray at the doctor’s office

àHeat can transfer energy in 3 ways. Label each picture as either conduction (CD), convection (CV) or radiation (R).

10. ______11. ______12. ______13. ______14. ______

15. Three different spoons are put into a bowl of boiling water with a piece of butter on each one. Since the spoons are touching the water, they are getting heat transferred to them through ______.

16. Continuing from question 15 - if the black spoon is wood, the shiny spoon is silver and the striped spoon is plastic, circle the spoon that would be a better conductor – meaning its butter will melt the fastest.

àAnswer questions 17-19 using the diagram to the right.

17. What type of heat transfer is depicted?

a. Conduction b. Radiation c. Convection

18. Which letter represents the cooler air?

a. Letter A b. Letter B c. Letter C

19. Which letter represents the warmest air?

a. Letter A b. Letter B c. Letter C