The planet Neptune is, on average, about 4.5 billion km from the sun. How long does it take light from the sun to reach Neptune? (Recall that the speed of light is about 300,000 km/s)
A) about 4 days B) about 4 hours C) about 4 seconds D) about 4 minutes
B
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The principle of faunal succession states that
A) fossil organisms follow one another in a definite, irreversible time sequence. B) rock cycling may dislodge and relocate fossils, making their age difficult to determine. C) fossils are always older than the rock in which they are found. D) fossils are ordained.
The common element discovered in the Sun's spectrum before it was found here is ________
Fill in the blank(s) with correct word
When the rate of burn and the exhaust velocity are constant, a rocket ascends with
a. decreasing acceleration. b. decreasing velocity. c. constant velocity. d. constant acceleration. e. increasing acceleration.
Why is it easier to locate meteorites in Antarctica than anywhere else on Earth? a. Antarctica is an easy location for humans to access
b. More scientists are in the area to find meteorites. c. When meteorites land, they melt a small crater on the ice. d. Meteorites are easy to detect on top of the ice where there are no Earth rocks. e. Meteorites fall most often through the ozone hole above the South Pole.