Problem 8
How will this circle graph change as the Sun ages? A. The hydrogen slice will get smaller. B. The hydrogen slice will get larger. C. The helium slice will get smaller. D. The circle graph will not change.
Problem 8
What happens after a nebula contracts and its temperature increases to 10 million \(K\) ? A) a black hole forms B) a supernova occurs C) fusion begins D) a white dwarf forms
Problem 9
How can events on the Sun affect Earth? Give one example.
Problem 9
Which of these has an event horizon? A) giant C) black hole B) white dwarf D) neutron star
Problem 10
How does a red shift differ from a blue shift?
Problem 10
What forms when the Sun fuses hydrogen? A) carbon C) iron B) oxygen D) helium
Problem 11
Which of the following best describes giant stars? A) hot, dim stars B) cool, dim stars C) hot, bright stars D) cool, bright stars
Problem 12
Which of the following are loops of matter flowing from the Sun? A) sunspots C) coronas B) auroras D) prominences
Problem 12
What is the main sequence?
Problem 13
What are groups of galaxies called? A) clusters C) giants B) supergiants D) binary systems
