Astronomy Chapter 3 Section 3
Why is Mars called the red planet?
Because its surface is reddish in color
Why is Mars red?
Chemical reactions between surface rock and atmospheric oxygen literally rusted the surface.
Why is Venus called Earth's twin?
Earth and Venus are similar in size, and core build up
Why does mercury have extreme temperatures?
It has no atmosphere, so it is hot in day when facing the sun, and as cold as -1113 degrees in the night
How large is Mars?
It is about 6000 kilometers in diameter
What is Venus's atmosphere composed of?
It is made of mostly sulfuric acid
Why is Venus called the "Evening Star"?
It is seen in the night sky, and looks like a star
Why are some of Mars' areas darker than others?
Mars is covered in dust, and it blows away at parts, exposing the terrain, which is darker than the dust.
What are the four inner planets?
Mercury, Venus, Earth, Mars
What are Mars' moons?
Phobos and Deimos
What is the closest planet to the sun?
The closest planet to the Sun is Mercury.
Is there water on Mars?
Yes. There are glacier ice caps in the north and south poles
What would happen if you were on Venus?
You would be crushed by the pressure :)
What is Mars atmosphere composed of mostly?
carbon dioxide
What are Earth's layers?
crust, mantle, core
What is the largest inner planet?
earth
What is the greenhouse effect?
the trapping of the sun's warmth in a planet's lower atmosphere
