absorb
to take in
amplitude
the maximum height of a wave
emit
to give off
energy
the ability to make things move or change
frequency
the number of peaks that pass in a second
light
a type of wave that carries energy from one place to another, even through space
light source
an object that emits light
matter
Anything that has mass and takes up space
molecule
a group of atoms joined together in a particular way
rate
how often or fast something happens
reflect
to bounce off
spectrum
a range of wavelengths
transmit
to pass through
ultraviolet
a type of light that is beyond violet on the spectrum
materials to change
Light carries energy that causes _____.
Material absorbs energy from light
_____ which causes the material to change
spectroscopist
scientist who studies light and how it interacts with material.
Australia
This country has the highest rates of skin cancer in the world.
in different ways.
Different types of light can change a material _____.
can emit
A light source _____ more than one type of light.
wavelengths
Different types of light have different _____.
absorbs energy
A material _____ from some types of light and not others.
Plants
_____ use energy from the sun to make their own food/
Different types of light from the sun
gamma rays, X-rays, UV light, visible light, infrared light, microwaves, and radio waves
sound waves
_____ require a medium to travel through, but light waves do not.
gamma rays and X-rays
The atmosphere absorbs _____, so these types of light do not reach Earth's surface.
skin cancer
UV light causes damage to genetic material in skin cells which can lead to _____.
UV light
Australia gets higher levels of _____ than other parts of the world.
Melanin
Found in a skin cell that can prevent damage by absorbing UV light before it reaches genetic material.
straight Line
Light travels in a _____.
not others
A material transmits or reflects some types of light and _____.
light energy is not absorbed
If _____, the material does not change.
absorbed by, transmitted through, or reflected off
Three ways that happens to light when it hits a material.