Study this thermal evolution diagram, which shows how the interior of a terrestrial planet should change with time and temperature. Select the part of the image that corresponds to the asthenosphere.

What are the ages of most meteorites that fall to Earth?

Select the letter on the following cross section of Earth that shows where the Silicic continental crust is made.

Study the following image of Vesta. What is the most likely cause of the linear ridges and grooves near the equator of Vesta?

Click on the possible explanations for Mercury’s large core. Choose the two most likely.

How did Earth’s atmosphere form?

Although both Mercury and Mars have similar gravity fields, Mars has an atmosphere whereas Mercury does not. What is a possible explanation?

Write brief but coherent answers to the following questions in the spaces provided. You can use an outline form if you desire, but complete sentences are also acceptable.

What is the evidence for ground ice (or ground water) on Mars? (Select all that apply.)

In which ways is the Oort cloud different than the Kuiper Belt? (Select all that apply.)