Which of the following is sound be considered?

a. Mechanical wave and transverse wave
b. Longitudinal wave and transverse wave
c. Mechanical wave and longitudinal wave

How does the longitudinal wave produce?

a. Created by pushing and pulling
b. Created by falling down
c. Created by a wave characteristics

What are the parts that can be observed in a longitudinal wave? 

a. Troughs and rarefactions
b. Compressions and crests
c. Compressions and rarefactions

What is the number of compressions passing by a certain point in 1 second?

a. Wavelength
b. Amplitude
c. Frequency

Which state of matter does the sound travel fastest?

a. Solids
b. Liquids
c. Gases

Sound can travel faster on a medium with higher elastic property. Which of the following material has the highest elastic property?

a. Wood
b. Rubber
c. Steel

How does the temperature of the medium affect the speed of sound? 

a. The hotter the medium the slower the sound travels.
b. The colder the medium the faster the sound travels.
c. The hotter the medium the faster the sound travels.

What does the speed of sound travel in dry air? 

a. 331 meter per second
b. 313 meter per second
c. 133 meter per second

Reflection of sound is the bouncing back of a wave as it hits a barrier. Which of the following refers to a multiple reflections of sound in a certain place? 

a. Echo
b. Echo sounding
c. Reverberation

During daytime, sound bends upward while in nighttime it bends downward. What do you call the bending of sound?

a.Reflection
b.Refraction
c.Dispersion​