section 6b part 1 mars

Question 1

Realize air on Mars is mostly

Answer 1

carbon dioxide (not oxygen) and very thin. Snow on Mars is also made of carbon dioxide

Question 2

Realize Mars has no liquid water features on its surface today but

Answer 2

shows effects of having water long ago in the past

Question 3

Recognize that Mars lost much of its atmosphere to space long ago

Answer 3

(due to its low gravity and dying magnetism).

Question 4

Be able to pick which planets or moons _______ might be good places to look for life today

Answer 4

• (Mars and Europa)

Question 5

Pick which planet is desert ___. Agree Mars had a thicker and warmer atmosphere _____ when it was younger

Answer 5

• (Mars)

- not thinner

Question 6

Pick the reason we know certain meteorites, found on Earth, originated from Mars

Answer 6

(gases from Mars trapped in the rock).

Question 7

be able to select that________ is today mixed in with frozen dirt and also occupies ice caps at the poles.

Answer 7

• Mars’ ancient liquid water