concave or convex
What type of mirror has a surface that curves inward?
concave
What is the function of the cornea in the eye?
Changes the direction of light as it enters
Which statement about the speed of light is true?
a. Light travels faster than sound
b. Light travels slower than sound
c. Light does not travel
d. Light travels at the same speed as sound
Light travels faster than sound
What is the primary function of the human ear?
a. To detect temperature changes
b. To amplify light waves
c. To convert sound waves into signals the brain can understand
d. To reflect sound waves
To convert sound waves into signals the brain can understand
What is echolocation primarily used for by animals?
food and navigating
Why are convex mirrors often used in hospitals and office buildings?
allow you to see more of the area ahead of you
Where is the optic nerve located?
behind the retina
What is a light ray?
a. A type of fish
b. A straight line along which light travels
c. A curved path of light
d. A type of sound wave
A straight line along which light travels
Which of the following describes pitch in sound waves?
a. The speed of the sound wave
b. The height of the sound wave
c. The frequency of the sound wave
d. The length of the sound wave
The frequency of the sound wave
What does the amplitude of a sound wave determine?
loudness of the sound
What is the shape of a convex lens?
curves outward
What part of the eye is responsible for controlling the size of the pupil?
iris
Which of the following electromagnetic waves has the longest wavelength?
radio waves
How does echo occur in sound waves?
When sound waves are bounced off a surface back to the listener
Which of the following is NOT a part of the inner ear?
a. Semicircular canals
b. Cochlea
c. Auditory canal
Auditory canal
What type of lens is the cornea considered to be?
convex
What is the colored part of the eye called?
iris
Which type of electromagnetic wave has the longest w
a.Gamma rays
b. Radio waves
c. Ultraviolet rays
d. Visible light
ultraviolent rays
Which part of the ear is responsible for amplifying sound waves?
middle ear
How many main types of electromagnetic waves are there?
seven
what are examples of microscopes and telescopes
concave
name all the parts of the eye
lens, iris, pupil , cornea, retina , optic nerve
Which of the following is NOT a type of electromagnetic wave?
a. Gamma rays
b. Sound waves
c. X-rays
d. Infrared
sound wave
Which part of the ear is responsible for collecting sound waves
outer ear
what happens when a light is refracted
the speed of the light lows down and changes direction