Which type of energy is formed by vibrating objects?
sound energy
100
Which part of the ear is filled with liquid that vibrates, causing little hairs to move?
cochlea
100
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
They both carry energy.
100
What type of material is used to make the stained glass window?
translucent material
100
What material does not let any light through?
opaque
200
Where would you be traveling in complete silence?
in outer space
200
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
200
What would the Earth be like without light energy from the Sun?
Earth would be a dead planet
200
Which muscular part of the eye controls how much light enters the eye?
iris
200
What material lets all the light pass through?
transparent
300
A sound wave is a type of ______ wave.
longitudinal
300
Why do shorter instruments have a higher pitch?
it has a shorter column of air
300
How can yellow light, ultraviolet waves, and X rays be described?
They are part of the electromagnetic spectrum.
300
When does light refract? When light travels in a vacuum; When light moves through cold air; when light travels in only one medium; or When light moves from one medium to another
When light moves from one medium to another.
300
_______ is the bending of light rays.
refraction
400
The ______ an object vibrates, the longer its wavelength and the lower its frequency will be.
Slower; Faster; Longer; Shorter
Slower
400
How do wind instruments produce sound?
Wind instruments produce sound when a player blows air across a hole. This causes the particles in a column of air to vibrate and produce sound.
400
What colors of light make up the visible spectrum?
The colors of the rainbow; red, orange, yellow, green, blue, and violet
400
What happens to light when it passes through a concave lens? The light rays spread apart; The light rays are absorbed; The light rays come together; or The light rays move in a straight path.
The light rays spread apart.
400
______ is the distance between a point on one wave and a similar point on the next wave.
wavelength
500
Why does sound travel through different mediums at different speeds? What does sound travel the fastest in and the slowest in, a solid, a liquid, or a gas?
The speed of the sound wave depends on the closeness of particles.
Solid-sound travels quickest; Liquid-sound travels slower; Gas-sound travels slowest
500
How are the wavelengths of sound from a gong and a tuning fork different? Choose two, one for the gong and one for the tuning fork: The column of air inside vibrates; It vibrates at a single frequency; Its sound is a blend of pitches; The string vibrates
Gong - Its sound is a blend of pitches; Tuning Fork - It vibrates at a single frequency
500
What are the two sources of light and what is their importance of each source of light to life on earth.
The SUN is a source of light that warms the earth and allows plants to make there own food; The FIRE is a source of light that provides warmth, light, and allows cooking food.
500
What did Benjamin Franklin invent? Contact lenses; The telescope; Compound lenses; or Bifocal's
Bifocal's
500
_____ is the part of the wave where the particles are closest together.