Honors Earth/Space CFE Review #2

Front

Which of the following is evidence of the Big Bang Theory? Options: Cavemen heard a loud bang at the beginning of time., The universe isn't moving, The universe is expanding, The universe is getting smaller.

Back

The universe is expanding

Front

Light waves that are stretched out by objects moving apart:

Back

appear more red.

Front

The universe is ____________ years old.

Back

13.8 billion

Front

Light emitted from a star or galaxy can be separated into a band of colors, called a ________.

Back

Spectrum

Front

Hotter stars appear to be what color?

Back

Blue

Front

Cooler stars appear to be what color?

Back

Red

Front

A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star. What stage in the life cycle does this describe?

Back

Red Giant or Red Supergiant

Front

A relatively small, dense star at the end of its life cycle, which generates little or no energy and has contracted to its densest state. What stage in the life cycle does this describe?

Back

White Dwarf

Front

In sea-floor spreading, molten material rises from the mantle and erupts

Back

along mid-ocean ridges.

Front

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

Back

subduction.