What is a reflection?
Organized scattering of a wave; light bouncing off a reflective surface creatin an image.
What kind of shapes can mirrors be made of? And how do the shapes affect the reflected image?
Convex and concave; upright/upside down, enlarged/reduced.
What is refraction? Give an example.
Bending of light as it enters or leaves a medium with different density; like a pencil viewed in a glass of water.
What properties do images have if they are formed by concave lenses or convex mirrors?
(1) located behind the convex mirror (2) a virtual image (3) an upright image (4) reduced in size (i.e., smaller than the object)
How do we see color?
Our eyes see different wavelengths of light as different colors.
How does a rainbow form?
Refraction of light through moisture in the air.
What colors are made by mixing red, green, and blue light two at a time in equal amounts?
Red and green make yellow, red and blue make magenta, and blue and green make cyan.
What would happen if you shone yellow light on a blue opaque object?
Nice, nailed it! / Sorry, we were looking for...
What forms of electromagnetic radiation does the Sun give off?
Infrared, visible light, and ultraviolet.
Why would exposure to X rays be more dangerous than radio waves?
X-rays have more energy and greater penetrating power.
