Explain what is meant by the solar cycle. What role does magnetism play?
What will be an ideal response?
Question 2During which step in cosmic evolution did diverse life forms begin to arise?
A) particulate evolution
B) stellar evolution
C) chemical evolution
D) biological evolution
E) cultural evolution
Question 3The greatest variation in size, mass, and luminosity occurs in:
A) globular clusters.
B) elliptical galaxies.
C) spiral and barred spiral galaxies.
D) type I vs. type II irregulars.
E) Seyfert galaxies.
Question 4Which type of telescope has the simplest light path?
A) prime focus reflector
B) single lens refractor
C) achromatic refractor
D) Newtonian reflector
E) Cassegrain reflector
Question 5When a star becomes a red giant, its core expands to a roughly proportional larger size too.
Indicate whether the statement is true or false
Question 6Where does a 1-solar-mass protostar appear on an H-R diagram?
A) to the right of the main sequence, and lower down than the Sun
B) to the right of the main sequence, and higher up than the Sun
C) to the left of the main sequence, and higher up than the Sun
D) Nowhereonly stars that have fusion in their cores can be shown on H-R diagrams.
Question 7What do we mean by a mass extinction?
A) the extinction of large animals, such as dinosaurs
B) the extinction of a large fraction of the world's plant and animal species in a relatively short period of time
C) an extinction caused by the impact of an asteroid or comet
D) the extinction of any species of plant or animal that has mass