Question 1

Radio amateurs are permitted to communicate on the "10-meter band".What frequency of radio waves corresponds to a wavelength of 10 meters? The speed of radio waves is 3 * 108 m/s.

Accepted Answer

A) 3.3 * 10-8 Hz 
B) 3.0 * 107 Hz 
C) 3.3 * 107 Hz 
D) 3.0 * 109 Hz 
A) 3.3 * 10-8 Hz 
B) 3.0 * 107 Hz 
C) 3.3 * 107 Hz 
D) 3.0 * 109 Hz

Question 2

You are looking at the bottom of a lake 1.2 m deep from a boat.To you the lake seems to be

Accepted Answer

A) less than 1.2 m deep. 
B) 1.2 m deep. 
C) more than 1.2 m deep. 
D) Any of these choices could be correct, depending on the height of the sun. 
A) less than 1.2 m deep. 
B) 1.2 m deep. 
C) more than 1.2 m deep. 
D) Any of these choices could be correct, depending on the height of the sun.

Question 3

Light of which of the following colors is scattered most in the atmosphere?

Accepted Answer

A) red 
B) blue 
C) yellow 
D) green 
A) red 
B) blue 
C) yellow 
D) green

Question 4

Of the following, the highest index of refraction is found in

Accepted Answer

A) air. 
B) water. 
C) glass. 
D) diamond. 
A) air. 
B) water. 
C) glass. 
D) diamond.

Question 5

Of the following kinds of waves, those that cannot be polarized are

Accepted Answer

A) X-rays. 
B) radio waves. 
C) light waves. 
D) sound waves. 
A) X-rays. 
B) radio waves. 
C) light waves. 
D) sound waves.

Question 6

To an astronaut in orbit around the earth the sky appears

Accepted Answer

A) red. 
B) blue. 
C) white. 
D) black. 
A) red. 
B) blue. 
C) white. 
D) black.

Question 7

Relative to the focal length of a wide-angle camera lens, the focal length of a telephoto lens is

Accepted Answer

A) shorter. 
B) the same. 
C) longer. 
D) Any of theses choices could be correct, depending on the camera. 
A) shorter. 
B) the same. 
C) longer. 
D) Any of theses choices could be correct, depending on the camera.

Question 8

An example of a purely longitudinal wave is a

Accepted Answer

A) sound wave. 
B) light wave. 
C) water wave. 
D) wave in a stretched string. 
A) sound wave. 
B) light wave. 
C) water wave. 
D) wave in a stretched string.

Question 9

The musical note A has a frequency of 440 Hz and its wavelength in seawater is 3.5 m.The speed of sound in seawater is

Accepted Answer

A) 80 m/s. 
B) 126 m/s. 
C) 1540 m/s. 
D) 3 * 108 m/s. 
A) 80 m/s. 
B) 126 m/s. 
C) 1540 m/s. 
D) 3 * 108 m/s.

Question 10

The higher the frequency of a wave,

Accepted Answer

A) the lower its speed. 
B) the shorter its wavelength. 
C) the smaller its amplitude. 
D) the lower its pitch. 
A) the lower its speed. 
B) the shorter its wavelength. 
C) the smaller its amplitude. 
D) the lower its pitch.

Question 11

Light of which of the following colors has the longest wavelength?

Accepted Answer

A) red 
B) blue 
C) yellow 
D) green 
A) red 
B) blue 
C) yellow 
D) green

Question 12

Sound waves of frequency 300 Hz have a speed relative to sound waves in the same medium of frequency 600 Hz that is

Accepted Answer

A) half as great. 
B) the same. 
C) twice as great. 
D) four times as great. 
A) half as great. 
B) the same. 
C) twice as great. 
D) four times as great.

Question 13

In a transverse wave, the individual particles of the medium move

Accepted Answer

A) in circles. 
B) in ellipses. 
C) parallel to the direction of travel. 
D) perpendicular to the direction of travel. 
A) in circles. 
B) in ellipses. 
C) parallel to the direction of travel. 
D) perpendicular to the direction of travel.

Question 14

The amplitude of a sound wave determines its

Accepted Answer

A) loudness. 
B) pitch. 
C) wavelength. 
D) overtones. 
A) loudness. 
B) pitch. 
C) wavelength. 
D) overtones.

Question 15

An example of a wave that is partly longitudinal and partly transverse is a

Accepted Answer

A) sound wave. 
B) light wave. 
C) water wave. 
D) wave in a stretched string. 
A) sound wave. 
B) light wave. 
C) water wave. 
D) wave in a stretched string.

Question 16

A medal in a plastic cube whose index of refraction is 1.5 appears to be 20 mm below the upper surface of the cube.The depth of the medal is actually

Accepted Answer

A) 10 mm. 
B) 13 mm. 
C) 20 mm. 
D) 30 mm. 
A) 10 mm. 
B) 13 mm. 
C) 20 mm. 
D) 30 mm.

Radio amateurs are permitted to communicate on the "10-meter band".What frequency of radio waves corresponds to a wavelength of 10 meters? The speed of radio waves is 3 * 10⁸ m/s.

You are looking at the bottom of a lake 1.2 m deep from a boat.To you the lake seems to be

Light of which of the following colors is scattered most in the atmosphere?

Of the following, the highest index of refraction is found in

Of the following kinds of waves, those that cannot be polarized are

To an astronaut in orbit around the earth the sky appears

Relative to the focal length of a wide-angle camera lens, the focal length of a telephoto lens is

An example of a purely longitudinal wave is a

The musical note A has a frequency of 440 Hz and its wavelength in seawater is 3.5 m.The speed of sound in seawater is

The higher the frequency of a wave,

Light of which of the following colors has the longest wavelength?

Sound waves of frequency 300 Hz have a speed relative to sound waves in the same medium of frequency 600 Hz that is

In a transverse wave, the individual particles of the medium move

The amplitude of a sound wave determines its

An example of a wave that is partly longitudinal and partly transverse is a

A medal in a plastic cube whose index of refraction is 1.5 appears to be 20 mm below the upper surface of the cube.The depth of the medal is actually

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Exam 7: Waves

Radio amateurs are permitted to communicate on the "10-meter band".What frequency of radio waves corresponds to a wavelength of 10 meters? The speed of radio waves is 3 * 108 m/s.

You are looking at the bottom of a lake 1.2 m deep from a boat.To you the lake seems to be

Light of which of the following colors is scattered most in the atmosphere?

Of the following, the highest index of refraction is found in

Of the following kinds of waves, those that cannot be polarized are

To an astronaut in orbit around the earth the sky appears

Relative to the focal length of a wide-angle camera lens, the focal length of a telephoto lens is

An example of a purely longitudinal wave is a

The musical note A has a frequency of 440 Hz and its wavelength in seawater is 3.5 m.The speed of sound in seawater is

The higher the frequency of a wave,

Light of which of the following colors has the longest wavelength?

Sound waves of frequency 300 Hz have a speed relative to sound waves in the same medium of frequency 600 Hz that is

In a transverse wave, the individual particles of the medium move

The amplitude of a sound wave determines its

An example of a wave that is partly longitudinal and partly transverse is a

A medal in a plastic cube whose index of refraction is 1.5 appears to be 20 mm below the upper surface of the cube.The depth of the medal is actually

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe

Filters

Radio amateurs are permitted to communicate on the "10-meter band".What frequency of radio waves corresponds to a wavelength of 10 meters? The speed of radio waves is 3 * 10⁸ m/s.