An atom is ionized if one of its electrons jumps to a higher energy level in the atom
a. True
b. False
Indicate whether the statement is true or false
False
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Earth's core is hot, dense, and mostly composed of iron and nickel
a. True b. False Indicate whether the statement is true or false
Earth's rapid rotation makes its axis sweep out the shape of a cone, like a heavy top slowing down. This motion is known as ____
a. momentum b. precession c. revolution d. precision e. recession
The supernova that formed M-1, the Crab Nebula, was observed in:
A) 1572 AD by Tycho Brahe. B) 1604 AD by Johannes Kepler. C) 1054 AD by Chinese and Middle Eastern astronomers. D) 1006 by observers in the southern hemisphere. E) about 9,000 BC by all our ancestors.
Identify the FALSE statement. You could summarize our Solar System's development by saying:
it formed solely from atoms generated by the big bang. its formation began as gravity pulled material into a bulbous disc. the central ball of the bulbous disc developed into the Sun. outlying material of the disc condensed into planetesimals. planetesimals coalesced to form the planets.