Question 1

Which of these, if used to replace gasoline as an automobile fuel, would not contribute to global warming?

Accepted Answer

Electricity from both nuclear and solar power plants does not produce carbon emissions during generation, thus not contributing to global warming when used as a fuel source for automobiles.

Question 2

Susan Solomon led the scientific expedition that

Accepted Answer

Susan Solomon is renowned for her work on the Antarctic ozone hole, leading expeditions to study ozone depletion over Antarctica.

Question 3

Which of the following is considered by scientists to be physically "real," but yet is not made of atoms or of other material particles such as protons, electrons, etc.?

Accepted Answer

Electromagnetic fields are considered physically real by scientists and are not made of atoms or material particles. They are a fundamental aspect of the universe, described by Maxwell's equations, and can exist in a vacuum without any matter.

Question 4

Do physicists consider electromagnetic fields to be "real"?

Accepted Answer

The answer of Do physicists consider electromagnetic fields to be...

Question 5

The first evidence for a finite, not infinite, speed of light came from observations in which

Accepted Answer

The first evidence for a finite speed of light came from observations by Ole Rømer in 1676, who noticed discrepancies in the timing of eclipses of Jupiter's moon Io, depending on the Earth's distance from Jupiter.

Question 6

The effect of de- forestation on the ozone layer problem is

Accepted Answer

Deforestation primarily affects carbon dioxide levels and does not have a significant direct impact on the ozone layer, which is more affected by chlorofluorocarbons (CFCs) and other ozone-depleting substances.

Question 7

Which of the following is produced by the thermal vibrations of molecules?

Accepted Answer

Thermal vibrations of molecules primarily produce infrared radiation, as they emit energy in the form of heat, which is in the infrared spectrum.

Question 8

A long- wavelength wave and a short- wavelength wave both move along the same rope. Which wave has the higher frequency, and which wave carries more energy, assuming their amplitudes are the same?

Accepted Answer

The short-wavelength wave has a higher frequency because frequency is inversely proportional to wavelength. Since energy is proportional to the square of the amplitude and the square of the frequency, the short-wavelength wave also carries more energy.

Question 9

Two brief waves or "pulses" are sent down a rope, in opposite directions, as shown in the figure. Pulse A is 1 cm in height, and pulse B is 2 cm in depth. When they meet, they will create

Accepted Answer

The answer of  Two brief waves or "pulses" are...

Question 10

Which of the following is a true "wave" as the word is defined in physics?

Accepted Answer

The answer of Which of the following is a true...

Question 11

Two continuous waves having the same wavelength and amplitude pass through the same medium. They are aligned crest to crest and trough to trough so that they interfere. The resulting wave has

Accepted Answer

When two waves are perfectly aligned crest to crest and trough to trough, they undergo constructive interference, resulting in a wave with the same wavelength but twice the amplitude.

Question 12

Suppose you photographed Earth's dark side from space, using ultraviolet- sensitive film, and using infrared- sensitive film. What would you expect to see in the photo?

Accepted Answer

Ultraviolet light is mostly absorbed by the atmosphere, so artificial sources like streetlights would be visible. Infrared radiation is emitted by all objects with heat, so it would show radiation from all over Earth.

Question 13

Two electromagnetic have different frequencies but equal amplitudes. The one with higher frequency has the

Accepted Answer

The energy of an electromagnetic wave is directly proportional to its frequency, so the wave with the higher frequency has greater energy.

Question 14

Which of the following are true waves, as the word is defined in physics?

Accepted Answer

The answer of Which of the following are true waves,...

Question 15

Which of the following are true waves, as the word is defined in physics?

Accepted Answer

The answer of Which of the following are true waves,...

Quiz 9: Electromagnetism Radiation and Global Climate Change

Which of these, if used to replace gasoline as an automobile fuel, would not contribute to global warming?

Susan Solomon led the scientific expedition that

Which of the following is considered by scientists to be physically "real," but yet is not made of atoms or of other material particles such as protons, electrons, etc.?

Do physicists consider electromagnetic fields to be "real"?

The first evidence for a finite, not infinite, speed of light came from observations in which

The effect of de- forestation on the ozone layer problem is

Which of the following is produced by the thermal vibrations of molecules?

A long- wavelength wave and a short- wavelength wave both move along the same rope. Which wave has the higher frequency, and which wave carries more energy, assuming their amplitudes are the same?

Two brief waves or "pulses" are sent down a rope, in opposite directions, as shown in the figure. Pulse A is 1 cm in height, and pulse B is 2 cm in depth. When they meet, they will create

Which of the following is a true "wave" as the word is defined in physics?

Two continuous waves having the same wavelength and amplitude pass through the same medium. They are aligned crest to crest and trough to trough so that they interfere. The resulting wave has

Suppose you photographed Earth's dark side from space, using ultraviolet- sensitive film, and using infrared- sensitive film. What would you expect to see in the photo?

Two electromagnetic have different frequencies but equal amplitudes. The one with higher frequency has the

Which of the following are true waves, as the word is defined in physics?

Which of the following are true waves, as the word is defined in physics?