8 Chapter 4 vocabulary

What is a mechanical wave?

• wave that travels only through the air

• wave that travels back and forth parallel to the direction of the wave

• wave that travels through matter

What is an electromagnetic wave?

• a wave that can travel through empty space or through matter

• a wave that can travel through empty space

• a wave in which the disturbance is perpendicular to the direction of the wave

What is a transverse wave?

• a wave that can only move through water

• a wave in which the disturbance is perpendicular to the direction the wave travels

• a wave in which the particles move back and forth parallel to the wave

What is a longitudinal wave?

• a wave that makes the particles of a medium move back and forth parallel to the direction of the wave

• a wave that can move through matter

• a wave that can travel over long distances

What is frequency?

• the number of wavelengths that pass a point each minute

• the number of wavelengths that pass a point each second

• the total number of wavelengths for a hour

What is amplitude?

• the minimum distance a wave must pass to validate

• the maximum distance a wave stays in a straight line

• the maximum distance a wave varies from its rest position

What is refraction?

• The change of a wave's speed as it travels through a medium

• The change of a wave's direction as it changes speed, moving between mediums

• The change is a wave's amplitude as it travels through a medium

What is a radio wave?

• a high-energy, how-frequency wave that is shorter than 30 cm

• a high-energy, low-frequency wave that is longer than 30 cm

• a low-energy, low-frequency wave that is longer than 30 cm

What is an infrared wave?

• a wave with a wavelength shorter than a microwave, but longer than light

• a wave with a wavelength longer than a microwave, but shorter than light

• a wave with a wavelength shorter than a microwave or light

What is an ultraviolet wave?

• a wavelength that is longer and higher frequency than light

• a wavelength that is shorter, but with a higher frequency than light

• a wavelength that is shorter and with a lower frequency than light