1. What is thermal energy?
a. Energy stored in the form of temperature
b. Energy generated by the sun
c. Energy produced by friction
d. Energy created by wind
2. How is thermal energy transferred?
a. Conduction, convection, and radiation
b. Reflection and refraction
c. Magnetization and demagnetization
d. Kinetic and potential energy
3. Which of the following is an example of conduction?
a. A pot of water boiling on a stove
b. Heat transfer through air currents
c. A hot air balloon rising in the sky
d. Touching a metal spoon that has been sitting in hot soup
4. How does convection occur?
a. Through direct contact of objects
b. Through electromagnetic waves
c. Through the movement of fluids
d. Through the vibration of particles
5. What is radiation?
a. The transfer of thermal energy through direct contact
b. The transfer of thermal energy through movement of fluids
c. The transfer of thermal energy through electromagnetic waves
d. The transfer of thermal energy through vibration of particles
6. Which of the following does not conduct thermal energy well?
a. Metal
b. Water
c. Air
d. Glass
7. Why do some materials make good insulators?
a. They conduct thermal energy well
b. They reflect thermal energy
c. They trap air pockets to prevent heat transfer
d. They are always cold to the touch
8. Which of the following is an example of radiation?
a. Boiling water in a pot
b. Sitting by a campfire
c. Placing a metal spoon in hot soup
d. Feeling the warmth of the sun on your skin
9. How can thermal energy be harnessed and used?
a. To cook food
b. To heat buildings
c. To generate electricity
d. All of the above
10. Which of the following is a renewable source of thermal energy?
a. Coal
b. Natural gas
c. Geothermal energy
d. Nuclear energy
Thermal energy online practice
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