The reason Jupiter has so many moons around it is that ________
A) these small moons are in the process of accreting to become one larger moon
B) many bodies were either captured by Jupiter's gravity or were the remnants of collisions with other bodies
C) the moons are an asteroid field from a planet that failed to form
D) the moons are the result of massive volcanic eruptions on the planet
Answer: B
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The USA can meet its growing oil needs by exploring and tapping domestic supplies in federal lands and coastal waters.
Answer the following statement true (T) or false (F)
If light enters a transparent medium at a right angle (perpendicular), what change occurs to the light?
A) Only its direction is changed. B) Only its velocity is changed. C) Both its direction and velocity are altered. D) It is reflected rather than entering the medium.
Which THREE of the following phenomena are related to the relative positions of the Sun, the Moon, and Earth?
a. Solar flares b. Eclipses c. Phases of the Moon d. Tides
When all of the Milankovitch cycles are taken into account, the present trend should be toward ____ over high latitudes of the Northern Hemisphere
a. warmer winters b. warmer springs c. warmer summers d. cooler summers e. cooler winters