EM Waves and Light Test

Ella is learning about different types of electromagnetic radiation. She makes the following list about one frequency of radiation:

-can damage cells of living things

-causes sunburn

-blocked by Earth's ozone layer

Which type of radiation does Ella's list describe?

• Infrared

• Microwave

• Ultraviolet

• Visible

Electromagnetic waves transmit

• charges

• matter

• fields

• energy

You can see yourself in a mirror because of

• absorption

• scattering

• regular reflection

• diffuse reflection

Although thunder and lightning are produced at the same time, you

• see lightning before you hear thunder because sound travels faster than light.

• see lightning before you hear thunder because light travels faster than sound.

• hear thunder before you see lightning because sound travels faster than light.

• hear thunder before you see lightning because light travels faster then sound.

The angle of incidence for a light wave is 30^o. What is the angle of reflection?

• 50^o

• 30^o

• 60^o

• 90^o

A person wants curtains that let in some light but prevent people outside from seeing into the house. The best choice of material would be one that is

• opaque

• reflecting

• transparent

• translucent

Which tool should a class use to separate light into the visible spectrum?

• magnifying glass.

• prism.

• microscope.

• mirror.

Why are light-colored clothes cooler to wear in the summer than dark-colored clothes?

• light-colored clothes let more air in.

• light-colored clothes prevent sweating.

• light-colored clothes are not as heavy as dark-colored clothes.

• light-colored clothes reflect more light than dark-colored clothes.

Darnel wants to list types of radiation based on their energy levels. Which list shows the order of radiation types from lowest to highest energy?

• Infrared radiation, microwaves, radio waves, visible light, x-rays, gamma rays, UV rays

• X-rays, gamma rays, infrared radiation, microwaves, radio waves, UV rays, visible light

• Visible light, infrared radiation, UV rays, microwaves, radio waves, x-rays, gamma rays

• Radio waves, microwaves, infrared radiation, visible light, UV rays, x-rays, gamma rays

Why does a leaf look green in the summer?

• The leaf absorbs green light.

• The leaf produces green light in its cells.

• The leaf uses green light to make food in its cells.

• The leaf reflects green light and absorbs other colors of sunlight.