1. Which of the following heat transfer through a substance or from a substance to another by
direct contact?
A convection B conduction C. radiation
D. absorption
2. A transfer of heat from one place to another by movement of in fluids.
A convection B radiation
C. absorption D. conduction
3 A transfer of heat through space by electromagnetic waves.
A absorption B conduction C. convection D. radiation
4. Which of the following objects produces heat energy?
A guitar
B. coins
C. fire
D. book
5. What energy being produced by vibrations of objects?
A light energy
B heat energy
C. electrical energy D. sound energy
6. What do you call the number of vibrations a sound source makes in a given amount of time?
A frequency
B. solid
C vibration
D. pitch​