What formed the lunar maria?
a. ancient lava flows
b. Earth-moon collision
c. volcanic eruptions
d. erosion
e. tectonic plate movement
Question 2Supernovae are triggered because iron releases the most fusion energy of any element.
a. True
b. False
Indicate whether the statement is true or false
Question 3What solid evidence do we have of the Moon's age?
a. deep core samples of the Moon
b. igneous rock samples brought back by Apollo astronauts
c. meteorites that have impacted Earth
d. laser altimetry readings from the LCROSS mission
e. sedimentary rock samples brought back by Apollo astronauts
Question 4The first steps of evolution off the main sequence are the same for both medium-mass and high-mass stars.
a. True
b. False
Indicate whether the statement is true or false
Question 5Large, smooth, dark plains on the moon are called ____.
a. ejecta blanket
b. central peak
c. maria
d. multiringed basin
e. Sinuous rilles
Question 6A nova is the event that creates a planetary nebula.
a. True
b. False
Indicate whether the statement is true or false
Question 7In larger craters, the deformation of the rock can form one or more concentric inner rings with the outer rim, producing _____.
a. ejecta blanket
b. maria
c. sinuous rilles
d. central peak
e. multiringed basin
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