No student devices needed. Know more
18 questions
A glass (a) breaks light into bands of color
a (a) lens is thick in the middle
sound is produced when matter (a)
sound that bounces back from an object is an
echo
cycle
concave
The complete movement of a vibration is a
echo
cycle
concave
The reflecting surface of a ___________ mirror curves inward
echo
cycle
concave
The high sound of a flute is called a high (a)
A (a) reflects light rays
The strength of a sound is its (a)
(a) measures distances underwater
the bending of a light wave is called a
sonar
refraction
decibels
a sound's intensity is measured in
sonar
refraction
decibels
(a) lenses are used for a person who is nearsighted
sound can travel through
empty space
matter
optics
frequency measures (a) of a sound wave
a concave lens (a) light waves
sound travels fastest through
gases
liquids
solids
particles of light are called
protons
photons
electrons
Explore all questions with a free account