Astronomy

1.	Quiz2 - Q1
	The Sun is a fairly normal star. Student Response Value Correct Answer True 100% True Score: 5/5
2.	Quiz2 - Q2
	At very large distances from the Sun, its corona turns into the solar wind. Student Response Value Correct Answer True 100% True Score: 5/5
3.	Quiz2 - Q3
	The Sun's density is about the same as Saturn's. Student Response Value Correct Answer True 0% False Score: 0/5
4.	Quiz2 - Q4
	The energy of the Sun starts as radiation, but is actually transported to its surface by convection, where it is radiated off into space at last. Student Response Value Correct Answer True 100% True Score: 5/5
5.	Quiz2 - Q5
	The light we see from the Sun comes from which layer?   Student Response Value Correct Answer Feedback 1. troposphere     2. chromosphere     3. ionosphere      4. photosphere 100%      5. corona     Score: 5/5
6.	Quiz2 - Q6
	How many planet Earths could fit inside the Sun?   Student Response Value Correct Answer Feedback 1. 110     2. 1000      3. a little over a million 100%      4. ten billion     5. ten trillion     Score: 5/5
7.	Quiz2 - Q7
	From inside out, which is in the correct order for the structure of the Sun?   Student Response Value Correct Answer Feedback 1. core, convective zone, radiative zone      2. photosphere, radiative zone, corona 0%     3. radiative zone, convective zone, chromosphere      4. core, chromosphere, photosphere     5. convective zone, radiative zone, granulation     Score: 0/5
8.	Quiz2 - Q8
	The vibrations of the Sun reveal information about   Student Response Value Correct Answer Feedback 1. the temperature of the core of the Sun.     2. the structure of the atmosphere of the Sun.     3. the production of energy in the Sun.      4. the interior structure of the Sun. 100%      5. the magnetic field of the Sun.     Score: 5/5
9.	Quiz2 - Q9
	The outward pressure of hot gas in the Sun   Student Response Value Correct Answer Feedback  1. is balanced by the inward gravitational pressure. 100%      2. is increasing the Sun's diameter.     3. is cooling the photosphere.     4. is responsible for variations in the sunspot cycle.     5. weakens the magnetic field.     Score: 5/5
10.	Quiz2 - Q10
	Which is the net result of the proton-proton chain?   Student Response Value Correct Answer Feedback  1. 4 protons = 1 helium 4 + a positron + a neutrino + gamma rays 0%     2. 2 protons = deuterium + a positron + an antineutrino + X-rays     3. 4 protons = 2 helium 2 + 2 positrons + ultraviolet radiation     4. 4 protons = 1 helium 4 + 2 neutrinos + gamma rays      5. 6 protons = 2 heliums + 3 positrons + 3 neutrinos + gamma rays     Score: 0/5
11.	Quiz2 - Q11
	Which of these are not associated with the active Sun?   Student Response Value Correct Answer Feedback 1. sunspots     2. prominences      3. granulation 100%      4. flares     5. aurora     Score: 5/5
12.	Quiz2 - Q12
	Suppose a large flare is detected optically. How long until radio interference arrives?   Student Response Value Correct Answer Feedback  1. simultaneously 100%      2. 8.5 minutes later     3. 12 hours later     4. no relation between the arrival time     5. 6 days later     Score: 5/5
13.	Quiz2 - Q13
	We know the Sun rotates differentially by observing sunspots; as with Jupiter the solar equator rotates the fastest. Student Response Value Correct Answer True 100% True Score: 5/5
14.	Quiz2 - Q14
	The proton-proton chain requires a temperature of 100 million K to get started. Student Response Value Correct Answer True 0% False Score: 0/5
15.	Quiz2 - Q15
	The solar constant is a measure of   Student Response Value Correct Answer Feedback 1. the energy received by the Sun on Earth's surface.      2. the energy received by the Sun at the location of Earth. 100%      3. the energy received by the Sun at any location in the solar system.     4. the energy emitted by the Sun at the photosphere.     5. the total energy emitted by the Sun in all directions.     Score: 5/5
16.	Quiz2 - Q16
	The luminosity of the Sun is a measure of    Student Response Value Correct Answer Feedback 1. the energy received by the Sun on Earth's surface.     2. the energy received by the Sun at the location of Earth.     3. the energy received by the Sun at any location in the solar system.     4. the energy emitted by the Sun at the photosphere.      5. the total energy emitted by the Sun in all directions. 100%      Score: 5/5
17.	Quiz2 - Q17
	The above diagram indicates that   Student Response Value Correct Answer Feedback 1. the Sun is hottest somewhere between its surface and its core.      2. the Sun is coolest somewhere between its surface and its core.     3. the Sun is hotter at its surface than at its core.      4. the Sun is hotter at its core than at its surface. 0%     5. the Sun has about the same temperature throughout its interior.     Score: 0/5
18.	Quiz2 - Q18
	What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun?    Student Response Value Correct Answer Feedback 1. convection, conduction      2. radiative diffusion, convection 100%      3. conduction, radiative diffusion     4. radiative diffusion, conduction     5. conduction, convection     Score: 5/5
19.	Quiz2 - Q19
	From where does most of the solar wind flow?   Student Response Value Correct Answer Feedback 1. granules     2. sunspots      3. flares 0%     4. prominences     5. coronal holes      Score: 0/5
20.	Quiz2 - Q20
	The numbers of sunspots and their activity peak about every:   Student Response Value Correct Answer Feedback 1. 36 days     2. 6 months     3. 1 year      4. 11 years 100%      5. 79 years     Score: 5/5