7th Grade Unit #3 Waves Review

Front

What is the definition of amplitude in a wave?

Back

Amplitude is the maximum distance that a wave's crest or trough moves from its rest position. It is half the distance from the crest to the trough.

Front

What is the medium in the context of waves?

Back

The medium is the substance through which a wave travels, such as air, water, or solid materials.

Front

How does the speed of sound waves vary with different mediums?

Back

The speed of sound waves depends on the medium through which they travel; sound travels faster in solids than in liquids, and faster in liquids than in gases.

Front

What is the relationship between wavelength and frequency in waves?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is a crest in a wave?

Back

A crest is the highest point of a wave.

Front

What is a trough in a wave?

Back

A trough is the lowest point of a wave.

Front

What is the definition of frequency in waves?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

What is the difference between reflection and refraction of waves?

Back

Reflection is when a wave bounces off a surface, while refraction is the bending of a wave as it passes from one medium to another.

Front

What is the formula for calculating wave speed?

Back

Wave speed = frequency × wavelength.

Front

What is the significance of repeating and replicating scientific investigations?

Back

Repeating and replicating investigations help validate results and identify errors in scientific experiments.