Across
- 4. The energy that changes to heat energy in an incandescent light bulb is considered to be ______ energy.
- 6. The hood is above the stove because _____ air rises.
- 8. A system _____ energy as heat in nature and in most cases, we cannot capture and reuse this energy.
- 12. Energy is never created and never destroyed; it simply changes form is the ____ of conservation of energy.
- 13. Heat is not a substance; it is a form of ______.
- 15. Like light, _____ waves can travel through the air and they can even move through empty space!
- 18. The cycle of rising and sinking particles is called the ___________ cycle.
- 19. As particles increase their speed, they also move _________ apart.
- 21. _______ always flows from hot to cold.
- 23. If you accidentally touch a hot burner, the heat moves from the burner to your hand, because your hand is _________.
- 24. Thermal energy is a measure of the _____ energy of motion of an object’s particles.
- 25. Particles that move more quickly are “______.”
- 26. Thermal energy is _______ between objects that touch each other.
- 27. Heat always moves from the warmer object to the cooler object until their temperatures are _______.
- 29. The particles in _____ are stuck in place and cannot move.
- 30. Heat flows in a predictable __________.
- 31. As hot particles move into a new area, they increase the area’s _______ energy.
- 33. Heat from our _______ is an example of radiation.
- 34. The campfire warms people by transferring heat through ________.
Down
- 1. A refrigerator relies on the properties of ______ to stay cool.
- 2. Compact fluorescent light bulbs have no _______ to heat up and waste energy.
- 3. Thermal energy always travels from the item with the ______ thermal energy to the item with the least.
- 5. Temperature measures the ______ energy of motion of an object’s particles.
- 7. Heat _________ happens when some of this energy moves from one object to another.
- 9. As the particles rise, they gradually lose energy, cool, and _____.
- 10. Heat radiation is energy that travels as infrared ___________ waves.
- 11. During convection, the particles themselves _____.
- 14. Convection causes hot air balloons to rise and ____.
- 16. During conduction, heat energy moves between particles that _____ each other.
- 17. An object’s thermal energy _______ the total energy of all its moving particles.
- 20. Most forms of energy are _________ transformed into thermal energy.
- 22. _________ can happen in solids, liquids, and gases.
- 24. __________ energy is the particles in the matter are in motion, and motion is a form of energy.
- 28. When the burner is turned on, the handle of the pan will get hot _____.
- 32. ______ is thermal energy that is being transferred from one place to another.
- 35. Temperature does ____ measure heat or thermal energy.