Why do we see objects as white?

Light travels

Light bounces when it is

soak up

prism

black

In class, you learned that light travels in a similar way to waves moving across water.

Using ______________ light means that we cannot see the signal. If it were visible, we would see a flashing light every time we use the remote to control the TV.

______________ travels in a similar way to waves moving across water.

Light can also ____________ with a wavelength that is very small or very large.

The longest wavelengths of light are called radio waves.

The shortest wavelengths are called gamma waves.

I cannot see most of the light that hits my eye because most of the wavelengths of __________ are non visible.

A microwave ___________ uses microwave light waves

Years ago, scientists discovered that water easily _____________ microwave light. When microwaves are absorbed by water, the temperature of the water increases.

When you put your food in a microwave oven, the water in that food absorbs non visible microwave __________ and heats up.

When you talk on a cell phone, your ____________ is actually sending and receiving microwaves!

Metal mostly absorbs x- rays because metal objects show up white on _______________.

_____________ can not travel through the metal ring.

Doctors use lead aprons because lead is metal, so it absorbs x- rays.

What is radiation?

What is a form of electromagnetic radiation?

Which form of electromagnetic radiation has a short wavelength?

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

what is this ?