8th Science Unit 7 Vocabulary

Front

What is the term for sound reflecting back from another surface?

Back

Echo

Front

What is a measure of wave energy, defined as the distance from the wave's resting position to the crest or trough?

Back

Amplitude

Front

What type of wave does need a medium to travel through?

Back

Mechanical wave

Front

In a longitudinal wave, what is the part where the particles are close together called?

Back

Compression

Front

What are the three smallest bones in the body, found in the ear?

Back

Hammer, Anvil, Stirrup

Front

What is the term for the highest point of a wave?

Back

Crest

Front

What is the term for the lowest point of a wave?

Back

Trough

Front

What is the distance between two consecutive crests or troughs in a wave called?

Back

Wavelength

Front

What is the term for the number of waves that pass a point in a given amount of time?

Back

Frequency

Front

What is the term for a wave that does not need a medium to travel through?

Back

Electromagnetic wave