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Forces and Motion
Waves
Eyes and Ears
Light
Electromagnetic Spectrum
100
What two factors are needed to find the speed of an object?
Distance and Time
100
What are the two types of waves?
Transverse and Conpressiona
100
Name the three main parts of the ear.
Inner, Middle, and Outer ear
100
What is the bending of waves caused by a change in speed passing through different mediums?
Refraction
100
What is the only type of wave that can be seen by the human eye?
Visible Light
200
What is the attractive force that exists between all objects with mass?
Gravity
200
What is a medium?
What a wave travels through
200
What is the first layer of the eye and what does it do?
Cornea; allows light to enter
200
What is the transmission of waves?
When waves pass through an object.
200
The longer the wavelength, the ...... the energy.
lower
300
Forces always act in...
pairs.
300
Name an example of a mechanical wave.
Sound wave
300
What part of the eye is light sensitive and transmits energy to the optic nerve?
Retina
300
What type of material is aluminum foil that it doesn't allow light to be transmitted?
Opaque
300
What colors are on the high frequency end?
Blue, Indigo, and Violet
400
What affect does friction have on the speed of an object?
It slows it down.
400
What are the colors of light?
Red, Orange, Yellow, Green, Blue, Indigo, and Violet
400
What does the optic nerve do?
Sends nerve impulses to the brain.
400
This is the bouncing of waves from a surface.
Reflection
400
What part of the electromagnetic spectrum comes just after visible light?
Ultraviolet
500
It takes 5 seconds for the ball to go from the start to finish line, 10 meters away. What is the speed of the ball?
2m/s
500
Name the four main parts of a transverse wave.
Crest, Trough, Amplitude, and Wavelength
500
How do nerve impulses get sent from the ear to the brain?
Liquid in the inner ear vibrates causing the tiny hairs to move against the nerve sending a pulse to the brain.
500
If all colors are absorbed, what color will the material appear?
Black
500
All objects emit infrared radiation, but ........ objects emit more.
hotter