Geoscience 1st semester final

Front

What does it mean if a galaxy is red shifted?

Back

The galaxy is moving away from us.

Front

Why is it summer in the Northern hemisphere?

Back

The sun's rays are more direct.

Front

What is a nebula?

Back

A nebula is a cloud of gas and dust in space.

Front

What is the consistency of a nebula similar to?

Back

Smoke.

Front

Why is Mercury the fastest moving planet?

Back

It is closest to the sun.

Front

What happens to the percentage of a parent product after one half-life?

Back

50% of the parent product remains.

Front

What happens to the percentage of a parent product after two half-lives?

Back

25% of the parent product remains.

Front

What is the main reason for seasons on Earth?

Back

The tilt of the Earth's axis.

Front

What is the closest planet to the sun?

Back

Mercury.

Front

What is the main component of a nebula?

Back

Gas and dust.