Directions: Answer the Following Questions on the Lines Provided

NameDateClass

Ch. 11 (Pg. 338)

Directions: Answer the following questions on the lines provided.

1.Compare and contrast sound waves and electromagnetic waves.

2.What vibrates to produce electromagnetic waves?

3.How are moving electric charges related to electric and magnetic fields?

4.What is radiant energy? What does it do?

5.How are wavelength, frequency, intensity, and energy related in an electromagnetic wave?

6.What is the speed of electromagnetic waves in a vacuum? In air? In water?

7.Describe photons.

8.Describe how Heinrich Hertz showed waves acting as particles. Include in your description the
effect of frequency and intensity.

1.Arrange the following types of waves from lowest to highest frequency with 1 being the lowest
and 7 being the highest.

a.microwaves

b.visible light

c.gamma rays

d.radio waves

e.infrared waves

f.X rays

g.ultraviolet waves

Directions: For each of the following, write the letter of the term or phrase that best completes the sentence.

2.The range of frequencies in which electromagnetic waves occur is called the .

3.Radio waves make vibrate.

4. are used in Magnetic Resonance Imaging to map body tissues..

5. are absorbed by the ozone layer.

6.Radio waves with wavelengths of less than 1 m are called .

7.Warmth that you feel from a fire is transmitted to you by .

8.The range of electromagnetic waves that you can detect with your eyes is .

Directions: Match each description with the correct electromagnetic waves.. Write the
letter of the correct term in the blank at the left.

Matching Set I

a.radio waves b.infrared waves c.visible light d.microwaves

e.ultraviolet light f.X rays g.gamma rays

1.wavelengths between 750 and 400 billionths of a
meter that can be detected by the human eye

2.radio waves with wavelengths between 1 millimeter
and 1 meter that are used for communications and
heating food

3.radio waves with wavelengths between 1 millimeter
and 750 billionths of a meter that are used for
remote controls

4.electromagnetic waves with wavelengths longer than
about 1 millimeter

5.wavelengths between 400 and 40 billionths of a meter
that can cause skin cancer with prolonged exposure

6.wavelengths less than 10 trillionths of a meter that
are produced in the nuclei of atoms

7.wavelengths less than 10 trillionths of a meter that
are used for screening devices in airports.