Ch 9 Physical Science Test

Which of the following best describes a wave?

• A static object

• A disturbance that transfers energy

• A type of particle

• A solid structure

Waves transfer energy from the disturbance to molecule to molecule by:

• moving molecules permanently from one place to another

• creating a temporary displacement in molecules

• changing the chemical structure of molecules

• increasing the temperature of molecules

Waves carry energy without moving the material along the wave by:

• displacing the material permanently

• transferring energy through vibrations

• moving the material along the wave

• creating a vacuum

What happens to waves as they run out of energy and die out, particularly in water?

• They increase in height and speed.

• They decrease in height and speed.

• They maintain their height and speed.

• They change direction and speed up.

All waves are produced by:

• vibrations

• reflections

• refractions

• diffractions

A mechanical wave is a wave that:

• travels through a vacuum

• requires a medium to travel through

• is a type of electromagnetic wave

• does not transfer energy

Energy moves at right angles to the direction. What type of wave is this describing?

• Longitudinal wave

• Transverse wave

• Surface wave

• Mechanical wave

Sound waves can travel through air, liquid, or solid. In which medium do they move the fastest and in which the slowest?

• Air, Liquid

• Solid, Air

• Liquid, Solid

• Air, Solid

A seismic wave is:

• a type of sound wave

• a wave of energy that travels through the Earth

• a type of ocean wave

• a wave created by wind

The crest is?

• Highest point

• Length

• Lowest point

• Trough