If an object allows most all light to pass through it then it is...

An object that blocks all of the light from passing through is...

This type of object lets some light through, but not all. It is not easy to see through this type of material.

If you were building a house in Alaska (where it can be daylight for months!), what type of material would be best to cover your windows with that would help keep the Sun out of your room so you can sleep?

Your grandma has plants in her kitchen. They need lots of light! What type of windows should she have installed that will be best for her indoor garden?

Used in transmitting television signals

The color with the shortest wavelength

The color with the longest wavelength

Used in heat lamps

causes sunburn

Used in cell phones and radar

Used to treat cancer cells. Greatest amount of energy

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