Chapter 22 Electromagnetic waves

Which statement is true about visible light?

• Humans cannot see any light from the electromagnetic spectrum.

• Visible light makes up a small part of the electromagnetic spectrum.

• Visible light has a frequency equal to that of gamma rays

• Humans can see visible light only as black light.

Which statement best describes the relationship between visible light and the electromagnetic spectrum?

• Visible light and the electromagnetic spectrum are different names for the same phenomenon.

• Visible light occupies about half of the electromagnetic spectrum.

• Visible light is a narrow band in the electromagnetic spectrum.

• Visible light and the electromagnetic spectrum have a small area of overlap.

Which of these describes a small range in the electromagnetic spectrum?

• gravity

• radiation

• electricity

• light

The range of all forms of radiant energy is called the

• video spectrum.

• audio spectrum.

• color spectrum.

• electromagnetic spectrum.

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All of these types of waves travel from the Sun to Earth except........

• light waves.

• sound waves.

• infrared waves.

• ultraviolet waves.

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Which statement about the electromagnetic spectrum is accurate?

• Gamma waves travel slower than radio waves.

• Ultraviolet waves make up most of the spectrum.

• X-rays travel slower than infrared waves.

• Visible light waves are a small part of the spectrum.

The Global Positioning System (GPS) is a system that uses satellites that orbit Earth. The satellites send signals to a GPS receiver that then shows the location of a particular place. Many of these receivers are used in cars. Which statement most likely explains how GPS technology helps people?

• It keeps people from getting lost.

• It keeps people from getting into accidents. .

• It helps people learn about the cultures of different countries.

• It helps people communicate with friends in different countries.

Electromagnetic waves with the lowest frequency and least amount of energy are ____________________.

• gamma rays

• microwaves

• radio waves

• ultraviolet waves

Electromagnetic waves with the highest frequency and greatest amount of energy are ______________________.

• gamma rays

• microwaves

• radio waves

• ultraviolet waves

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Electromagnetic waves with enough energy to penetrate skin and muscle, but not lead are known as __________________.

• visible light

• infrared

• X rays

• gamma rays

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