Electromagnetic Spectrum

Electromagnetic waves transfer energy from one ______ to another.

• object

• place

• person

• source

At what speed do all electromagnetic (EM) waves travel through space or a vacuum?

• The speed of sound

• The speed of light

• The speed of an airplane

• The speed of a car

What are X-rays used to make?

• Sounds of the body

• Images of the body

• Measurements of the body

• Heat maps of the body

X-rays pass easily through which type of tissue?

• Hard tissue

• Soft tissue

• Muscular tissue

• Nervous tissue

Do X-rays pass through bone as easily as they do through soft tissue?

• Yes, equally easily

• No, they pass more easily through bone

• No, they do not pass as easily through bone

• The text does not provide this information

Visible light is the ______ that our eyes can see.

• Sound

• Wavelength

• Energy

• Heat

In the visible spectrum, which color has the longest wavelength?

• Blue

• Green

• Red

• Yellow

Which color has the shortest wavelength in the visible spectrum?

• Orange

• Violet

• Indigo

• Red

What are microwaves commonly used for?

• Cooking food in microwave ovens

• Transmitting television signals

• Powering electric vehicles

• Generating electricity

Microwaves are used in which of the following communication technologies?

• Cell phones

• Satellite dishes

• Radio broadcasting

• Fiber optics