BBT pretest

Front

What does the Big Bang theory suggest?

Back

The universe is continually expanding.

Front

What evidence do distant galaxies show?

Back

They show a red shift, indicating that the universe is expanding.

Front

How is the 'Big Bang' described?

Back

It is described as an expansion.

Front

What does the expansion of the universe imply?

Back

All of the galaxies are spreading out, and the universe must have started from a single point.

Front

Why is the light from distant galaxies red-shifted?

Back

They are moving away from us.

Front

What is the significance of red shift in astronomy?

Back

It indicates that an object is moving away from the observer, supporting the idea of an expanding universe.

Front

What does the term 'universe' refer to?

Back

The totality of space, time, matter, and energy that exists.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is cosmic background radiation?

Back

The afterglow radiation from the Big Bang, filling the universe.