Bennett Mechanical Test Acoustics and Optics 4

Question 1

A sonar device measures distance by timing how long it takes sound to:

Accepted Answer

Travel to an object and return

Answer

Change pitch

Answer

Heat the water

Answer

Reflect light

Question 2

When you see lightning before hearing thunder, it is because:

Accepted Answer

Light travels faster than sound

Answer

Sound travels faster than light

Answer

Thunder happens later

Answer

Light is louder

Question 3

A smooth, shiny surface reflects light in a way called:

Accepted Answer

Regular (specular) reflection

Answer

Diffuse reflection

Answer

Refraction

Answer

Absorption

Question 4

A magnifying glass forms a larger image because it is a:

Accepted Answer

Convex lens

Answer

Concave lens

Answer

Flat mirror

Answer

Prism

Question 5

The number of complete sound waves passing a point each second is the wave's:

Accepted Answer

Frequency

Answer

Amplitude

Answer

Speed

Answer

Reflection

Question 6

An object appears red because it:

Accepted Answer

Reflects red light and absorbs others

Answer

Absorbs red light

Answer

Emits its own red light

Answer

Refracts only red

Question 7

Sound waves are classified as which type of wave?

Accepted Answer

Longitudinal

Answer

Transverse

Answer

Electromagnetic

Answer

Standing only