Quiz
Chapter 8 - The Sun
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Perguntas do quiz (31)
1The temperature of the layer of gas that produces the visible light of the Sun is
- A3,500K
- B5,800K
- C12,300K
- D300,000K
- E15 millionK
2The area in the Sun's atmosphere located above the chromosphere (1,500 - 10,000 km. where the temperature rises dramatically is called the
- Aphotosphere
- Bcorona
- Csolar wind
- Dtransition zone
- Econvection zone
3The luminosity of the Sun is a measure of
- Athe energy received by the Sun on Earth's surface.
- Bthe energy received by the Sun at the location of Earth.
- Cthe energy received by the Sun at any location in the solar system.
- Dthe energy emitted by the Sun at the photosphere.
- Ethe total energy emitted by the Sun in all directions.
4Hydrostatic equilibrium in our Sun is the balance between
- Aconvection and radiation.
- Bconvection and gravitation.
- Cpressure and radiation.
- Dradiation and gravitation.
- Egravitation and pressure.
5What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun?
- AConvection, conduction
- BRadiative diffusion, convection
- CConduction, radiative diffusion
- DRadiative diffusion, conduction
- EConduction, convection
6The pattern of rising hot gas cells all over the photosphere is called
- Afilaments
- Bgranulation
- Csunspots
- Dconvective projections
- Eprominences
7Visible sunspots lie in the
- Achromosphere
- Btransition zone
- Ccorona
- Dradiative zone
- Egranulation in the photosphere
8Sunspots
- Aare always found close to the Sun's poles.
- Bcome in pairs, representing the north and south magnetic fields.
- Cwere most numerous during the Maunder Minimum.
- Dtravel over the surface of the Sun from pole to pole.
- Eare relatively constant in number every year.
9Loops of glowing hydrogen seen hanging over the solar limb during totality are
- Asolar rainbows
- Bhaloes
- Cprominences
- Dfilaments
- Eflares
10The critical temperature the core must reach for a star to shine by fusion is
- A5,800 K.
- B11,000 K.
- C127,000 K.
- D10 million K.
- E100 million K.
11In the proton-proton cycle, the helium atom and neutrino have less mass than the original hydrogen. What happens to the "lost" mass?
- AIt is recycled back into hydrogen.
- BIt is ejected into space.
- CIt is converted to energy.
- DIt is transformed into electrons.
- EConservation of mass dictates no mass can be lost.
12Neutrinos travel from the Sun's core to the Earth in
- Amillions of years.
- Bthousands of years.
- Ca few days.
- Da few hours.
- Ea few minutes.
13At very large distances from the Sun, its corona turns into the solar wind.
- AVerdadeiro
- BFalso
14The 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.
- AVerdadeiro
- BFalso
15Sunspots are only about 2,000 K cooler than the much brighter photosphere.
- AVerdadeiro
- BFalso
16Solar activity cannot disrupt communications on Earth.
- AVerdadeiro
- BFalso
17Compared with Earth’s diameter, the Sun’s diameter is about
- Athe same
- B10 times larger
- C100 times larger
- D1 million times larger
18Overall, the Sun’s average density is roughly the same as that of
- Arain clouds
- Bwater
- Csilicate rocks
- Diron-nickle meteorites
19A typical solar granule is about the size of
- Aa U.S. city
- Ba large U.S. state
- Cthe Moon
- DEarth
20As we move to greater and greater distances above the solar photosphere, the temperature in the Sun’s atmosphere;
- Asteadily increases
- Bsteadily decreases
- Cfirst decreases and then increases
- Dstays the same
21The time between a successive sunspot maxima is about
- Aa month
- Ba year
- Ca decade
- Da century
22The primary source of the Sun’s energy is
- Afusion of light nuclei to make heavier ones
- Bfission of heavy nuclei into lighter ones
- Cthe slow release of heat left over from the Sun's formation
- Dthe solar magnetic field
23Neutrinos from the solar core
- Ado not exist
- Bcannot be detected
- Ccannot be explained
- Dcan turn into other particles before reaching Earth
24The Sun is a rather normal star
- AVerdadeiro
- BFalso
25Nuclei are held together by the strong nuclear force.
- AVerdadeiro
- BFalso
26The proton–proton chain releases energy because mass is created in the process.
- AVerdadeiro
- BFalso
27The most abundant element in the Sun is hydrogen.
- AVerdadeiro
- BFalso
28There are as many absorption lines in the solar spectrum as there are elements present in the Sun.
- AVerdadeiro
- BFalso
29The density and temperature in the solar corona are much higher than in the photosphere.
- AVerdadeiro
- BFalso
30Sunspots appear dark because they are hotter than the surrounding gas of the photosphere.
- AVerdadeiro
- BFalso
31Flares are caused by magnetic disturbances in the lower atmosphere of the Sun.
- AVerdadeiro
- BFalso
Informações
- Descrição
- ANT2000 Astronomy Quiz sobre Chapter 8 - The Sun, criado por ayslinn cline em 15-07-2017.
- Autor
- ayslinn cline
- Idioma
- English
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