A) Which is the net result of the proton-proton chain? 4 protons = 2 helium 2 +

Question

A) Which is the net result of the proton-proton chain? 4 protons = 2 helium 2 + 2 positrons + ultraviolet radiation 4 protons = 1 helium 4 + a positron+ a neutrino+ gamma rays 2 protons = deuterium + a positron + an antineutrino + X-rays 4 protons = 1 helium 4 + 2 neutrinos + gamma rays

B) While observing the Sun, you note a large number of sunspots. What can you conclude? The Earth's climate will be unusually cold there are likely to be an above average number of flares and prominences The Sun is less luminous than usual This is a period of low solar activity

C) Which statement best explains the dark splotches on the Sun? they are extremely cold objects, as cold as Pluto They are extremely hot, but cooler than the surrounding areas of the Sun They are solid bodies floating on the surface of the Sun they are hotter than the surrounding areas of the sun

C) In the proton-proton cycle, the helium atom and neutrino have less mass than the original hydrogen. What happens to the "lost" mass? (1pts) it is ejected into space it is converted to energy It is recycled back into hydrogen it is transformed into electrons

D) The temperature of the layer of gas that produces visible light we see is

3500 K

5800 K

12300 K

300000 K

E) The light we see from the Sun comes from which layer?

chromosphere

photosphere

corona

ionosphere

F) By which mechanism does solar energy reach the Sun's photosphere from the layer just beneath it?

convection

ionization

radiation

differentiation

Explanation / Answer

A) 1 helium 4 + 2 neutrinos + gamma rays

B) There are likely to be an above average number of flares and prominences.

C) It is converted to energy.

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