Why do we think Mars had more volcanic activity in the past than it does today?
a. Mars was bombarded with more impacts in the past, which fueled more volcanic activity.
b. Mars’ interior would have been warmer in the past.
c. Some meteorites from Mars come from relatively young lava.
d. All of the above.
e. b and c.
e. b and c.
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What is the criterion for using lumped mass capacity?
What will be an ideal response?
Below is a radial velocity curve for a spectroscopic binary. Which of the stars is most massive? ____________________
What will be an ideal response?
Significant Figures: The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area of the rectangle should be written as
A. 0.68 m2 B. 0.682 m2 C. 0.6818 m2 D. 0.68175 m2
The most recent time that water appears to have flowed on Mars, if only briefly, is during the
A) Amazonian Era B) Hadean Era C) Noachian Era D) Hesperian Era