Do electromagnetic waves or mechanical waves always require a medium

Do mechanical waves (such as sound) travel faster through gasses or solids?

If you can see a blurry or shadowy shape through a medium how is the medium described? (opaque,

transparent, translucent, transient

What does it mean for light waves to be transmitted by a material?

If light waves do not appear to be transmitted through a solid, what is happening to most of the waves?

(absorbed, reflected, refracted?)

What is it called when light waves bend due to changing media?

If waves are smaller in amplitude after passing through a material, what happened to the waves?

(absorbed, reflected, refracted?)

What is the difference between transparent and opaque materials?

Which colors are absorbed if a color appears white?

If light is absorbed by a material, what do we know about the frequencies of the light and the molecules

of the material?

they are equal

Which colors absorbed if a color appears black

What would happen if you experimented with light using a green color filter

Why would something appear red if placed in a white light

What type of lens is used to correct nearsightedness in humans

If an object is placed in front of a convex mirror, how will it appear? (larger, smaller, the same, upside

down?) (Mirror activity)

What type of lens would you use if you wanted objects to appear larger

What shape are the lenses in an optical telescope