Our Moon and Mars both show very different hemispheres. Compare them and explain why this occurred in each case
What will be an ideal response?
The far side of our Moon and southern hemisphere of Mars are ancient and heavily cratered. The near side of the Moon has the striking mare, lava flows pulled out by our tides, while the northern hemisphere of Mars sits opposite the Hellas impact basin, and has great volcanoes on the Tharsis bulge and great plains, smoothed by either lava or water.
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The ____________________ period of the moon is the time required for one revolution of the moon around Earth with respect to the stars
Fill in the blank(s) with correct word
Refer to the sketch above of an H-R diagram for a star cluster. Consider the star to which the arrow points. Which of the following statements about this star is true?
A) It is somewhat more massive than the Sun. B) It is smaller in radius than the Sun. C) It has a lower luminosity than the Sun. D) Its surface temperature is higher than the Sun's. E) Its core temperature is lower than the Sun's.
When an object experiences uniform circular motion, the direction of the acceleration is
A) in the same direction as the velocity vector. B) in the opposite direction of the velocity vector. C) is directed toward the center of the circular path. D) is directed away from the center of the circular path. E) depends on the speed of the object.
If an object's speed is constant, its velocity must also be constant
a. True b. False Indicate whether the statement is true or false