Sound 1
What happens when light passes from air into water?
It slows down
Describe the pitch and volume of a police siren.
High pitch and high volume
The height of a wave from the center to the crest or trough is called the ____________________.
amplitude
The bending of light rays as they enter a new medium is called ______________.
refraction
Why do you see lightning from a distance before you hear thunder?
light travels faster than sound
What instruments use lenses or mirrors to collect and focus light from distant objects?
telescopes
The term that refers to how high or low a sound seems to a person
pitch
The distance between the crest of one wave and the crest of the next wave is called the _______________.
wavelength
When the surface of a mirror curves inward, the like the inside of a bowl, it is called a___________________.
concave mirror
A disturbance that transfers energy from place to place is called a ______________.
wave
As a sound source moves toward a listener, the pitch appears to _______.
increase
A set of tones combined in a way that is pleasing to the ear
music
Waves are created when a source of energy causes a medium to ______________________.
vibrate
A curved piece of glass or other transparent material that is used to refract light is called a ___________.
lense
The bending of waves due to a change in speed is called ______________.
refraction
The speed of sound depends on________________.
The properties of the medium it travels through
The highest point of a wave is called the _____________.
crest
What type of lens focuses light?
Convex
Why do we see colors?
Light being reflected or absorbed.
Does sound travel faster in liquids or solids?
Solids
Doctors use________________ waves to make sonograms.
ultrasound
Frequency is measured in units called _______________.
hertz
What effect does a concave lens have on parallel light rays passing through it?
A concave lens causes light rays to move apart.
Describe the sound from a refrigerator.
Low volume and low pitch.