Question 1

The sun s magnetic field is evident in the looped shapes of

Accepted Answer

The answer of The sun s magnetic field is evident...

Question 2

Sunspots are known to be magnetic phenomena because

Accepted Answer

The Zeeman effect, which is the splitting of spectral lines in the presence of a magnetic field, is observed in sunspots, providing evidence that they are magnetic phenomena.

Question 3

Much of the solar wind comes from ____ where the magnetic field does not loop back into the sun.

Accepted Answer

Coronal holes are areas in the sun's corona where the magnetic field does not loop back to the sun's surface, allowing for the easy escape of particles, which contribute to the solar wind.

Question 4

The Doppler effect states that the motion of any object can

Accepted Answer

The Doppler effect is a change in the wavelength of light or sound waves caused by the motion of the source. As the source moves closer, the waves are compressed and the wavelength becomes shorter (blue shift). As it moves away, the waves are stretched and the wavelength becomes longer (red shift). This can cause a shift in the spectral lines of an object, allowing scientists to determine the velocity and direction of the object's motion.

Question 5

Differential rotation of the sun is

Accepted Answer

Differential rotation of the sun refers to the equatorial regions of the sun rotating more rapidly than the polar regions, which causes a twisting of the magnetic field lines and contributes to the formation of sunspots and other solar activity.

Question 6

The corona and chromosphere of the sun are believed to be heated by

Accepted Answer

High energy particles being accelerated by the sun's magnetic field are thought to be the primary source of heating for the corona and chromosphere of the sun. This process is known as magnetohydrodynamic heating.

Question 7

The energy of a photon is proportional to the light s

Accepted Answer

The answer of The energy of a photon is proportional...

Question 8

Granulation is caused by

Accepted Answer

Granulation on the surface of the Sun is caused by the rising and sinking of gases below the photosphere, which creates a pattern of bright and dark regions. This convective motion is driven by the transfer of heat from the core to the surface, and is a hallmark of the Sun's outer layers. Granulation is caused by the rising of hot gases and sinking of cooler gases below the photosphere. This creates a constantly changing pattern of bright and dark cells on the surface of the Sun.

Question 9

The chromosphere of the sun

Accepted Answer

The chromosphere is hotter than the photosphere, reaching temperatures of about 20,000 K compared to 5,500 K in the photosphere.

Question 10

____ about 130 km above Earth s surface near the polar regions when energy in the solar wind guided by Earth s magnetic field excites gases in the upper atmosphere.

Accepted Answer

Auroras occur about 130 km above Earth's surface near the polar regions when energy in the solar wind guided by Earth's magnetic field excites gases in the upper atmosphere. The phenomenon described in the question is characteristic of auroras, which occur in the polar regions of Earth's upper atmosphere when particles from the solar wind interact with gases in the atmosphere. Coronas, flares, and coronal holes are all associated with the sun, and nuclear fission is a process of nuclear energy production, none of which are related to the described phenomenon.

Question 11

The bluer the light, the ____ each photon contains.

Accepted Answer

The energy of a photon is directly proportional to its frequency (E = hf) and since blue light has a higher frequency than red light, blue light photons contain more energy. Therefore, the correct answer is A) more energy.

Question 12

The sunspot cycle affects ____________.
I. the latitude at which most sunspots occur
II. the number of sunspots that are visible.
III. the rotation rate of the sun s equator
IV. the magnetic polarity of the sunspot pair members in a hemisphere.

Accepted Answer

The sunspot cycle affects the latitude at which most sunspots occur (I), the number of sunspots that are visible (II), and the magnetic polarity of the sunspot pair members in a hemisphere (IV). The rotation rate of the sun's equator (III) is not directly affected by the sunspot cycle. The sunspot cycle affects the latitude at which most sunspots occur (I), the number of sunspots that are visible (II), and the magnetic polarity of the sunspot pair members in a hemisphere (IV). It does not affect the rotation rate of the sun's equator (III). Therefore, the best choice(s) are E) I, II, IV.

Question 13

The ____ coincides with the period known as the little ice age of Europe and North America. This provides one piece of evidence that suggests a link between solar activity and the amount of solar energy Earth receives.

Accepted Answer

The Maunder sunspot minimum coincided with the little ice age, providing evidence for a link between solar activity and Earth's climate. Babcock sunspot model, coronal hole, Coulomb barrier, and weak solar force are not directly related to this phenomenon.

Question 14

Most of the visible light we see coming from the sun originates from the

Accepted Answer

The photosphere is the visible surface of the sun and is where most of the visible light we see originates from. The other options listed either do not emit visible light or emit very little visible light.

Question 15

The strong force is the force that

Accepted Answer

The strong force is responsible for binding protons and neutrons together to form a nucleus. It is also known as the strong nuclear force. This force is what holds the nucleus of an atom together, as well as binding the protons and neutrons within the nucleus.

Question 16

Astronomers can use ____ to measure magnetic fields on the sun.

Accepted Answer

The Zeeman effect refers to the splitting of spectral lines in the presence of a magnetic field. This can be used to measure the strength and direction of magnetic fields on the sun.

Question 17

A filtergram is a photograph of the sun s surface made

Accepted Answer

A filtergram is a photograph of the sun's surface made with only those photons emitted in a specific spectral line.

Question 18

What is the order of star colors with increasing temperature?

Accepted Answer

The answer of What is the order of star colors...

Question 19

The ____ occurs when a rapidly rotating conductor is stirred by convection to produce a magnetic field.

Accepted Answer

The dynamo effect refers to the process by which a rotating, convecting electrically conducting fluid can maintain a magnetic field over time. This effect is responsible for the creation of Earth's magnetic field and is important in the study of astrophysics. The other choices (B, C, D, E) are unrelated phenomena.

Question 20

Each element has its own set of characteristic absorption lines because

Accepted Answer

The absorption lines of an element depend on the unique electron energy levels of that element.

Quiz 5: Sun Light and Sun Atoms