Geoscience 1st semester final

Front

What is unusual about the rotation of Venus?

Back

It spins the opposite direction as the other planets.

Front

Which planet is known to have life?

Back

Earth is the only planet that we know has life on it.

Front

If an element has a half-life of 100 years, how much time has passed if there is only 1/8 of the parent material left?

Back

300 years.

Front

What are the inner 4 planets called?

Back

Terrestrial.

Front

According to the principle of superposition, which layer is the youngest in an undisturbed stack?

Back

The top layer.

Front

What is the term for planets like Earth, Mars, Venus, and Mercury?

Back

Terrestrial planets.

Front

What is a half-life?

Back

The time required for half of the parent material in a radioactive substance to decay.

Front

What is the main difference between terrestrial and jovian planets?

Back

Terrestrial planets are rocky, while jovian planets are gas giants.

Front

What does the term 'superposition' refer to in geology?

Back

In an undisturbed sequence of rocks, the oldest layers are at the bottom and the youngest are at the top.

Front

Which planet spins very slowly on its axis?

Back

Venus.