Chapter 7 Quiz Jessica Brandon

1.Why is earth geologically active?

Earth remains plenty of internal heat because it is large for terrestrial planets. That heat drives geological activity keeping the core molten and driving geological activity. The circulation of molten metal in the core generates earth magnetic field.

2. What geological processes shape earths surface?

Impact cratering volcanism tectonics and erosion

3. How does earth atmosphere affect the planet?

Erosion protection from radiation greenhouse effect

4. Was there ever geological activity on the moon or mercury?

Early cratering on the moo. And mercury is still present indicating the activity ceases long ago. Lunar Maria resulted from early volcanism tectonic feature on mercury indicate early shrinkage.

5. What geological feature tell us that water once flowed on mars?

Dry riverbeds eroded craters and rock flood plains all show that water ice and perhaps pockets of underground water ice and perhaps pockets of underground liquid water.

6. Why is mars change?

Mars's atmosphere must have once been much ticker for its greenhouse effect to allow liquid water on the surface.

7. Is Venus geologically active?

It's surface shows evidence of major volcanism and tectonics during the last billion years there is no evidence for erosion or plate tectonics

8. Why is Venus so hot?

The runaway greenhouse effect made Venus too hot for liquid ocean all carbon dioxide remains in the atmosphere leading to a huge greenhouse effect.

9. How is a human activity changing our planet

Human activity is releasing carbon dioxide into earths atmosphere increasing the greenhouse effect and producing global warning

10. What makes a planet habitable?

Earths distance from the sun allows for liquid water on earths size allows it to retain an atmosphere and enough internal heat to drive geological activity