Chapter 24: Studying the Sun Flashcards
1
Q
Gas flows outward from the corona and forms the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. A. sunspot B. solar wind C. aurora D. solar flare
A
B. solar wind
2
Q
What two elements make up 98.4 percent of the Sun's composition? A. oxygen and helium B. hydrogen and nitrogen C. hydrogen and helium D. hydrogen and carbon dioxide
A
C. hydrogen and helium
3
Q
Which layer of the Sun's atmosphere is above the chromosphere? A. troposphere B. corona C. photosphere D. stratosphere
A
B. corona
4
Q
Why do astronomers rely on computer models for an explanation of the Sun’s interior?
A. The interior can’t be directly observed.
B. They need more than the observations of the interior.
C. to remove the effects of the solar wind.
D. the interior is only visible during a solar eclipse.
A
A. The interior can’t be directly observed.
5
Q
Where does the Sun's energy originate from? A. the core B. the radiative zone C. the convection zone D. the corona
A
A. the core
6
Q
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ is the combining of light weight nuclei into heavier nuclei, which gives off energy that fuels the Sun. A. Fusion B. Radiation C. Division D. fission
A
A. Fusion
7
Q
The Sun contains \_\_\_\_\_\_\_\_\_\_\_\_\_\_ percent of all the mass in our solar system. A. 99 B. 100 C. 10 D. 1
A
A. 99
8
Q
What is a spectrum that comes from non-compressed gas called? A. an emission spectrum B. rainbox C. sunspot D. solar flare
A
A. an emission spectrum
9
Q
The lowest layer of the Sun's atmosphere is called the A. troposphere B. lithosphere C. chromosphere D. photosphere
A
D. photosphere
10
Q
Which zone of the Sun moves energy through radiation? A. corona B. radiative C. convective D. photosphere
A
B. radiative
11
Q
What is the Sun’s average density similar to?
A. the density of water.
B. the density of the entire solar system
C. the density of the rocky planets
D. the density of the gas giant planets
A
D. the density of the gas giant planets
12
Q
From where on the Sun does the solar wind escape? A. photosphere B. sunspots C. coronal holes D. solar flres
A
C. coronal holes
13
Q
Look at the periodic table in the room. What is unique about the two elements that compose most of the Sun's gases? A. they are both metals B. they are the two lightest elements C. they are very heavy elements D. they are both radioactive
A
B. they are the two lightest elements
14
Q
What are dark spots on the Sun's photosphere called? A. sunspots B. solar winds C. solar flares D. auroras
A
A. sunspots
