science vocab

reflected sound wave

• echo

• transparent

• opaque

• pitch

a wave in which particles move in the same direction as a wave

• longitudinal wave

• echo

• transparent

• light ray

perception of how high or low sounds seem

• pitch

• sound wave

• echo

• light ray

longitudinal wave that can travel only through matter

• sound wave

• echo

• pitch

• transparent

narrow beam of light that travels in a straight line

• light ray

• pitch

• echo

• sound wave

something that emits light

• light source

• echo

• light ray

• pitch

material through which light does not pass

• opaque

• echo

• light ray

• light source

allows most light to pass through but forms blurry images

• translucent

• pitch

• sound wave

• light ray

allows almost all light to pass through and forms a clear image

• transparent

• echo

• light ray

• pitch

to change from one thing into another

• convert

• iris

• retina

• mirrior