The vast flood deposits support the hypothesis that Mars once had much running water. Assuming that Mars did have water once, what happened to it?
What will be an ideal response?
As Martian volcanism died down, the atmosphere became too thin for greenhouse gases to keep the water liquid. Most froze in the polar caps or as tundra underground, and some was also lost into space, like Venus lost its due to exposure to ultraviolet light.
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At the speed of light, how long would it take to go from Earth to the Sun?
a. about a second b. about a minute c. about 8 minutes d. about a day e. about a year
Free Fall: When a ball is thrown straight up with no air resistance, the acceleration at its highest point
A. is upward. B. is downward. C. is zero. D. reverses from upward to downward. E. reverses from downward to upward.
An electron, initially moving at 2.0 × 104 m/s along the +x-axis, experiences a constant acceleration of 1010 m/s2 in the +y direction. How far from its starting point is the electron after 4.0 × 10-6 seconds?
A) 8.0 m B) 11.3 m C) 9.8 m D) 11.3 cm E) 8.0 cm
Another name for quantum mechanics is ______________ mechanics
Fill in the blank(s) with correct word