Reflection and Refraction
Reflection is when light __________ a surface.
Bounces off
true or false: visible light has the highest frequency on the electromagnetic spectrum
false
The two types of telescopes are
reflection and refraction telescopes
The length of a wave is called the _____
wavelength
What causes rainbows?
the diffraction of visible light in raindrops.
We can predict where a light beam will reflect by looking at the ______ the light is hitting the surface.
angle
This type of electromagnetic radiation is used in night vision goggles.
infrared
reflection telescopes work by
mirrors inside the telescope reflecting light to magnify objects.
How many waves there are is called the ___________
Frequency
What is a constellation?
A group of stars that look like a certain shape in the sky. They are often connected to stories and mythologies of different origins.
Refraction is when a material ______ light as it passes through.
bends
This type of electromagnetic radiation causes sunburn.
ultraviolet light.
Refraction telescopes work by
Special lenses bending light to magnify objects.
The height of the wave (from equilibrium to peak or equilibrium to trough) is called the
amplitude
What is a wave?
A way that energy travels.
Light bouncing off a mirror so you can see yourself is an example of
reflection
The types of electromagnetic wave are different because of their _______
wavelength and frequency
Different stars are different colors because...
they are different temperatures, and that causes them to emit different wavelengths of energy.
Light waves are an example of what type of wave?
transverse waves
This tool was used by Sir Isaac Newton (and by us during a lab) to split visible light into the colors of the rainbow.
Prism
refraction
the splitting of visible light into different colors is called
diffraction
Which star is hotter - a red star or a blue star?
A blue star
As wavelength increases, frequency (increases, decreases, stays the same).
decreases.
Lowest levels of light pollution