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Which curve on a graph shows the expansion of a universe that started with a Big Bang?

a) A straight horizontal line
b) A parabolic curve
c) A curve that starts at zero and rapidly increases
d) A curve that starts at a point and gradually rises

User Mirancon
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1 Answer

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Final answer:

The curve that depicts the universe's expansion from the Big Bang is one that starts from zero and rapidly increases, reflecting the initial inflationary period followed by ongoing, gradual expansion.

Step-by-step explanation:

The curve on a graph that shows the expansion of a universe that started with a Big Bang is a curve that starts at zero and rapidly increases. This represents the initial rapid expansion phase, often referred to as inflation, followed by a more moderate expansion rate. In contrast, curve 1 shows a universe that will stop expanding and begin contracting, leading to a 'big crunch'. Curve 2 depicts an open universe that will expand forever but at an ever-slower rate. Curve 3 illustrates a universe where expansion slows to a stop infinitely far in the future. Finally, Curve 4 represents a universe with accelerating expansion due to dark energy, which fits the current understanding of our universe's expansion.

The correct answer is (c) A curve that starts at zero and rapidly increases.

User Lee Baldwin
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