Light and Sound

Which type of energy is formed by vibrating object?

• light energy

• sound energy

• chemical energy

• mechanical energy

Choose the word that belongs in the sentence.

A sound wave is a type of ________ wave.

• parallel

• transverse

• longitudinal

• perpendicular

Where would you be traveling in complete silence?

• in outer space

• under the ocean

• in a solid wood room

• at the top of a mountain

A guitarist strums two strings on a guitar. The first string vibrates more quickly than the second string. What is true about the pitch of the strings?

• The first string has a higher pitch than the second string.

• The second string has a higher pitch than the first string.

• The first string and the second string have the same pitch.

• The pitch of the second string depends on the pitch of the first string.

Which part of the ear is filled with liquid that vibrates, causing little hairs to move?

• cochlea

• eardrum

• middle ear

• outer ear

How are light waves and sound waves similar?

• They both are invisible.

• They both carry energy.

• They both travel in vacuums.

• They both are harmful to cells.

When does light refract?

• When light travels in a vacuum.

• When light moves through cold air.

• When light travels in only one medium.

• When light moves from one medium to another.

What type of material is used to make the stained glass window?

• opaque

• reflective

• transparent

• translucent

Which muscular part of the eye controls how much light enters the eye?

• lens

• iris

• pupil

• cornea

What happens to light that passes through a concave lens?

• The light rays spread apart.

• The light rays are absorbed.

• The light rays come together.

• The light rays move in a straight path.