Geoscience 1st semester final

Front

Planets that you can walk on, have few moons, have higher density, and are smaller are called __________ planets.

Back

terrestrial planets

Front

How long does it take for the moon to orbit the Earth?

Back

29.5 days

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

How does the moon shine?

Back

It reflects light from the sun.

Front

What are the rings of Saturn made of?

Back

Rock and ice.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, Mars.

Front

What is the main difference between terrestrial and jovian planets?

Back

Terrestrial planets are rocky and smaller; jovian planets are gas giants and larger.

Front

What is a half-life?

Back

The time required for half of a sample of a radioactive substance to decay.

Front

What is the primary source of light for the moon?

Back

The sun.

Front

Name the largest planet in our solar system.

Back

Jupiter.