Grade 7 - UNIT 2 -TEST REVIEW - Waves

Front

What is the speed of sound in different mediums?

Back

Sound travels faster through solids than through liquids and gases.

Front

What is the phenomenon called when light separates into a spectrum of colors as it passes through a prism?

Back

Dispersion.

Front

What type of wave behavior occurs when a wave bounces off a surface?

Back

Reflection.

Front

What are the two main characteristics that vary in electromagnetic waves?

Back

Wavelength and frequency.

Front

Which type of wave requires a medium to travel?

Back

Sound waves.

Front

What is the definition of a wave?

Back

A disturbance that transfers energy from one place to another.

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel, while electromagnetic waves do not.

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 relationship between wavelength and frequency in waves?

Back

They are inversely related; as wavelength increases, frequency decreases.