Question 1

The strong force is the force that

Accepted Answer

A)   binds electrons to the nucleus in an atom.
B)   holds the Moon in orbit around Earth.
C)   creates the magnetic field associated with sunspots.
D)   produces the extremely high temperatures in the solar corona.
E)   binds protons and neutrons together to form a nucleus.

Question 2

Modern astronomers suspect the corona is heated by

Accepted Answer

A)   shock waves rising from below the photosphere.
B)   the solar wind.
C)   magnetic carpets.
D)   shock waves rising from below the photosphere, the solar wind, and the solar magnetic field.
E)   none of the others.

Question 3

The multicolored ring in the image above of Earth is a/an ___________.

Accepted Answer

A)   impact site under the water, falsely colored.
B)   tornado
C)   hurricane
D)   aurora

Question 4

Diagram 7-1 
Diagram 7-1 shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere. What is the temperature of the Sun at a distance of 2,000 km?

Accepted Answer

A)   500 K
B)   900 K
C)   5,000 K
D)   9,000 K
E)   100,000 K

Question 5

Astronomers can use ________ to measure magnetic fields on the Sun.

Accepted Answer

A)   helioseismology
B)   perchloroethylene (C2Cl4) 
C)   neutrino detectors
D)   a magnetic carpet
E)   the Zeeman effect

Question 6

The above picture shows the Sun's change in temperature with elevation into the Sun's atmospheric layers. The region from 10,000-70,000 K is known as the ____________.

Accepted Answer

A)   photosphere
B)   chromosphere
C)   corona
D)   transition zone D

Question 7

a) Draw the p-p fusion chain that generates helium from hydrogen, labeling each of the four hydrogen atoms needed in the reaction. Label each product formed or particle generated by its common name. b) Discuss how many particles and products are generated in one fusion chain.

Accepted Answer

(a) Drawing should look like Figure 7-12...

Question 8

Fusion is promoted in the core of the Sun by the _______ there.

Accepted Answer

A)   low temperature and low density
B)   high temperature and high density
C)   low temperature and high density
D)   high temperature and low density B

Question 9

Spicules

Accepted Answer

A)   are found in the photosphere.
B)   are magnetic disturbances that push large loops of material off the solar surface.
C)   are responsible for twisting the solar magnetic field and causing the sunspot cycle.
D)   appear in the corona near the north and south poles of the Sun during a total solar eclipse.
E)   are visible in filtergrams of the solar chromosphere.

Question 10

Neutrinos are created in reactions in the _______ of the Sun.

Accepted Answer

A)   corona
B)   chromosphere
C)   photosphere
D)   core

Question 11

Lithium has less binding energy than _____________, thus the neutrons and protons are easier to unbind from the nucleus.

Accepted Answer

A)   helium
B)   nitrogen
C)   carbon
D)   all of the other choices

Question 12

A(n) ____________________ is a subatomic particle produced in nuclear fusion that can travel through the Sun and escape to space without interacting with any particles in the Sun.

Accepted Answer

The answer of A(n) ____________________ is a subatomic particle produced...

Question 13

List and explain the four fundamental forces in nature.

Accepted Answer

(1) Gravity: The attractive force betwee...

Question 14

Spicules occur in the _______________ atmospheric layer of the Sun.

Accepted Answer

A)   photosphere
B)   chromosphere
C)   corona
D)   transition zone B

Question 15

Streamers above sunspots suggest ___________.

Accepted Answer

A)   a prominence is about to rise into the corona
B)   a solar flare is about to erupt
C)   a magnetic field
D)   a supergranule is about to form

Question 16

Differential rotation of the Sun is

Accepted Answer

A)   heating in the chromosphere and corona that makes them hotter than the photosphere.
B)   the magnetic dynamo inside the Sun.
C)   the equatorial regions of the Sun rotating more rapidly than the polar regions.
D)   the origin (and subsequent disappearance of)  Sunspots first near the poles then closer to the Sun's equator as the Sunspot cycle progresses.
E)   the rotation of the Sun's southern and northern hemispheres in opposite directions.

Question 17

What effects does solar activity have on Earth?

Accepted Answer

Evidence suggests that there is a link b...

Question 18

Why does a filtergram reveal details in higher layers of the solar atmosphere?

Accepted Answer

A filtergram is an image of th...

Question 19

The above image shows a prominence mostly in the ____________ atmospheric layer of the Sun. Because of the far-ultraviolet (FUV)  image, we know the _____________ layer of the Sun's atmosphere is shown.

Accepted Answer

A)   chromospheric, chromospheric
B)   photospheric, photospheric
C)   corona, corona
D)   corona, chromospheric

Question 20

A recent sunspot maximum occurred in 2013. What is the year of the sunspot maximum that immediately follows the 2013 maximum if the solar cycle continues?

Accepted Answer

A)   2017
B)   2019
C)   2022
D)   2024
E)   The last cycle started a Maunder minimum and the next maximum cannot be predicted.

Exam 7: The Sun

The strong force is the force that

Correct AnswerverifiedShow Answer

Modern astronomers suspect the corona is heated by

Correct AnswerverifiedShow Answer

The multicolored ring in the image above of Earth is a/an ___________.

Correct AnswerverifiedShow Answer

Diagram 7-1 Diagram 7-1 shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere. What is the temperature of the Sun at a distance of 2,000 km?

Correct AnswerverifiedShow Answer

Astronomers can use ________ to measure magnetic fields on the Sun.

Correct AnswerverifiedShow Answer

The above picture shows the Sun's change in temperature with elevation into the Sun's atmospheric layers. The region from 10,000-70,000 K is known as the ____________.

Correct AnswerverifiedD

a) Draw the p-p fusion chain that generates helium from hydrogen, labeling each of the four hydrogen atoms needed in the reaction. Label each product formed or particle generated by its common name. b) Discuss how many particles and products are generated in one fusion chain.

Correct Answerverified(a) Drawing should look like Figure 7-12...View AnswerShow Answer

Fusion is promoted in the core of the Sun by the _______ there.

Correct AnswerverifiedB

Spicules

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Neutrinos are created in reactions in the _______ of the Sun.

Correct AnswerverifiedShow Answer

Lithium has less binding energy than _____________, thus the neutrons and protons are easier to unbind from the nucleus.

Correct AnswerverifiedShow Answer

A(n) ____________________ is a subatomic particle produced in nuclear fusion that can travel through the Sun and escape to space without interacting with any particles in the Sun.

Correct AnswerverifiedShow Answer

List and explain the four fundamental forces in nature.

Correct Answerverified(1) Gravity: The attractive force betwee...View AnswerShow Answer

Spicules occur in the _______________ atmospheric layer of the Sun.

Correct AnswerverifiedB

Streamers above sunspots suggest ___________.

Correct AnswerverifiedShow Answer

Differential rotation of the Sun is

Correct AnswerverifiedShow Answer

What effects does solar activity have on Earth?

Correct AnswerverifiedEvidence suggests that there is a link b...View AnswerShow Answer

Why does a filtergram reveal details in higher layers of the solar atmosphere?

Correct AnswerverifiedA filtergram is an image of th...View AnswerShow Answer

The above image shows a prominence mostly in the ____________ atmospheric layer of the Sun. Because of the far-ultraviolet (FUV) image, we know the _____________ layer of the Sun's atmosphere is shown.

Correct AnswerverifiedShow Answer

A recent sunspot maximum occurred in 2013. What is the year of the sunspot maximum that immediately follows the 2013 maximum if the solar cycle continues?

Correct AnswerverifiedShow Answer

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D

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(a) Drawing should look like Figure 7-12...
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B

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(1) Gravity: The attractive force betwee...
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B

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Evidence suggests that there is a link b...
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A filtergram is an image of th...
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The above image shows a prominence mostly in the atmospheric layer of the Sun. Because of the far-ultraviolet (FUV) image, we know the _ layer of the Sun's atmosphere is shown.

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