8. What is the displacement of a body per unit of time in a given direction?
a. Distance
b. Displacement
C. Velocity
d. Speed
9. Who argued that in the absence of air resistance, all bodies, regardless of their mass would fall on Earth's
surface at the same rate from the same height?
Galileo Galilei b. Michael Cohen c. Timothy Cooney d. Alan McComack
10. A free-falling body uniformly accelerates at approximately
a. 8.9 m/s2
b. 9.8 m/s2
c. 9.7 m/s2
d. 9.5 m/s2
11. What is a region where the particles are pressed together?
a. compression
b. rarefaction
c. mechanical waves d. Electromagnetic waves
12. In between successive compressions, What is a stretched region?
a. compression
b. rarefaction
c. mechanical waves d. Electromagnetic waves
13. What are the longitudinal waves produced by vibrating bodies?
a. Sound
b. Pitch
c. Intensity
d. Loudness
14. What is the highness or lowness of sound as perceived by a listener?
a. Sound
b. Pitch
c. Intensity
d. Loudness
15. What is the magnitude of the sound perceived by the ear?
a. Sound
b. Pitch
c. Intensity
d. Loudness
16. What is the rate at which sound energy flows through a unit area?
a. Sound
b. Pitch
c. Intensity
d. Loudness
17. What is the measure of the average kinetic energy of the particles in a body?
a. Temperature b. Conduction
c. Convection
d. Radiation
18. What is the transfer of heat through direct contact of the particles of matter?
a. Temperature b. Conduction
c. Convection
d. Radiation
19. What is the transfer of heat by a mass moving fluid?
a. Temperature b. Conduction
c. Convection
d. Radiation
20. What is the transfer of heat via electromagnetic waves?
a. Temperature b. Conduction
c. Convection
d.Radiation
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