The convection zone constantly cycles fresh hydrogen into the Sun's core and moves created helium into the outer parts of the star.
Answer the following statement true (T) or false (F)
False
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If the Sun were to magically and instantaneously be replaced by a 1 solar mass black hole, what would happen to the Earth's orbit?
A) It would be unchanged. B) It would be much smaller, but its shape would be unchanged. C) It would be at the same distance from the Sun, but would be much more eccentric. D) It would be much larger, but its shape would be unchanged. E) The Earth would be pulled into the black hole and destroyed.
The volcano Olympus Mons on Mars is
A) taller than Mt. Everest and as large as the state of Arizona B) smaller than Mt. Everest but as large as North America C) taller than Mt. Everest and but only as large as the Big Island of Hawaii D) about the same height and size as Mt. St. Helens in Washington State, USA
What is the source of luminosity for protostars that have not yet become hot enough for fusion in their cores?
A) light absorbed from nearby stars B) energy released by infalling matter C) fusion in their low-density outer layers D) fission from concentrated radioactive elements
One mole of helium gas expands adiabatically from 2 atm pressure to 1 atm pressure. If the original temperature of the gas is 20°C, what is the final temperature of the gas? (g = 1.67)