Term
| Venus has a density of 4.0 g/cm3, what is it made of? |
|
Definition
|
|
Term
| Venus has a moment of inertia of 0.33 is it a uniform sphere or is it differentiated? |
|
Definition
|
|
Term
Venus' gravity is almost the same as earth so the volcanoes on Venus will be:
The same size as earth's
Larger then earth's
Smaller then earth's |
|
Definition
|
|
Term
| When we observe venus from earth what do we see? |
|
Definition
Only it's atmosphere.
We cannot see through the white haze that is it's atmosphere. |
|
|
Term
| What observations did landers on Venus make? |
|
Definition
The albedo of the surface is 0.11
The surface is covered in smooth lava flows and basalt looking chunks
Yellow light from the sun makes it through the atmosphere
the rocks are potassium and calcium which means they are basalt. |
|
|
Term
| What conclusions were made based on the lander missions to Venus? |
|
Definition
| Venus' surface is young and volcanically active. |
|
|
Term
|
Definition
US orbiter mission to Venus
The orbiter sent radio waves bouncing off the surface of Venus and observed the reflected radiation to see what the surface looked like. |
|
|
Term
| What main features are observed on Venus? |
|
Definition
Fractures
Earth sized shield volcanoes
Coronae
Plataue topped mountains |
|
|
Term
|
Definition
The longest tectonic feature in the solar system.
It is a 6800km fracture |
|
|
Term
|
Definition
| Crack in the surface of a planet caused by tectonic activity |
|
|
Term
|
Definition
Low slope basaltic volcanoes.
Thousands cover the surface of the planet.
It looks most like the spreading ridge under water by Iceland. |
|
|
Term
|
Definition
Blister shaped tectonic features
Hot magma blobs rise to the crust of Venus causing a bump in the crust.
As the blob cools and sinks it scrunched the crust above it. |
|
|
Term
|
Definition
Large flat top Mountains
When large blobs of magma cool just bellow the crust and sink they pinch the crust above it together into large flat topped mountains. |
|
|
Term
|
Definition
Hot magma in the core rises to the crust in blobs.
They release their heat to the crust
Then sink back down to the core to heat up again
In this way heat is transported from the core to the surface of the planet. |
|
|
Term
| How does Venus release heat from it's surface? |
|
Definition
| Blob tectonics slowly heat the crust of Venus until it is hot enough that the entire crust melts and cools back to a solid releasing the heat to the atmosphere and space. |
|
|
Term
| What is the age of the surface of venus |
|
Definition
|
|
Term
| Why is the surface of Venus so young? |
|
Definition
The crust melts and reforms regularly erasing all old features and starting a new.
The last time it melted was 0.5 Byrs ago |
|
|
Term
| How do we know that Venus underwent differentiation and was present for the Late Heavy Bombardment? |
|
Definition
| The moon went through differentiation and was present for the Late Heavy Bombardment therefore the other planets in the solar system were present for them. |
|
|
Term
| What are there so few small craters on Venus? |
|
Definition
The atmosphere is so thick that the little meteorites get burnt up before they make it throug.
Meteorites must be the size of a house to make it through the atmosphere. |
|
|
Term
| What are there so few small craters on Venus? |
|
Definition
| The atmosphere is so thick that the little meteorites get burnt up before they make it throug. Meteorites must be the size of a house to make it through the atmosphere. |
|
|
