Mrs. Kim's The Big Bang Theory Review

Front

What is the Big Bang Theory?

Back

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

Front

What does red shift indicate about the universe?

Back

It indicates that the universe is expanding.

Front

What is cosmic background radiation?

Back

The afterglow radiation from the Big Bang, providing evidence for the universe's early state.

Front

What is Hubble's Law?

Back

A law stating that the farther away a galaxy is, the faster it is moving away from us, indicating the expansion of the universe.

Front

What is the Doppler effect?

Back

The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What happens to light from an object moving away from an observer?

Back

The wavelengths of light are stretched, causing a red shift.

Front

What elements are most abundant in the universe?

Back

Hydrogen, helium, and lithium.

Front

What is the significance of the abundance of elements in the universe?

Back

It supports the Big Bang Theory by showing the predicted ratios of elements formed in the early universe.

Front

What does the term 'red shift' refer to?

Back

The phenomenon where light from an object moving away from an observer is shifted to longer wavelengths.

Front

What is the cosmic microwave background (CMB)?

Back

The thermal radiation filling the universe, a remnant from the Big Bang.