Terrestrial Planets

Question 1

terrestrial planets have relatively ___ masses.

a) low
b) high

Answer 1

a) low

Question 2

which type of planet is closest to sun

Answer 2

terrestrial

Question 3

what are terrestrial planets made of

Answer 3

rocky, mostly heavy elements, high density

Question 4

radius and distance from sun of mercury

Answer 4

40% of earth radius and 0.4 AU from sun

Question 5

mercury year length and rotation

Answer 5

88 days and rotation takes 58.8

Question 6

mercury axis

Answer 6

perpendicular to orbit

Question 7

what planet is cratered

Answer 7

mercury

Question 8

when is mercury visible

Answer 8

sunrise/sunset

Question 9

mercury temperature and atmosphere

Answer 9

most extreme temperature range due to slow rotation and lack of atmosphere

450 C during day, -150 during night.

Question 10

venus nickname

Answer 10

morning/evening star

Question 11

venus size and distance from sun

Answer 11

95% of earths size, 0.72 AU from sun

Question 12

venus year and roation

Answer 12

1 year = 225 days and rotation is slow and retrograde taking 244 days.

Question 13

appearance of venus

Answer 13

full cloud cover looks blue but surface under is reddish (blue scattered)

Question 14

venus temperature and atmosphere

Answer 14

470 C, atmosphere is thick made of 96% carbon dioxide with some nitrogen and sulfuric acid and has strong greenhouse effect with little erosion (not much rain and wind).

Question 15

mars radius and distance from sun

Answer 15

radius almost half of earths, 1.5 AU from sun

Question 16

mars year length and day length

Answer 16

678 day for 1 year, 24 hours for 1 day.

Question 17

mars temperature and axis

Answer 17

coldest at poles (~-100 C), rages from -70 C to 10 C and axis tilted allowing for seasons (mostly cold)

Question 18

mars color

Answer 18

reddish from rusting minerals

Question 19

mars interior

Answer 19

not much known, probably geologically inactive

Question 20

mars surface features

Answer 20

large volcanos (20 km tall olympus mons)

tharsis bulge

icy carbon dioxide-water polar caps

Question 21

mars atmosphere

Answer 21

thin, 95% carbon dioxide, 1% atmospheric pressure of earths

Question 22

water on mars

Answer 22

was there in past but now only liquid underground and on surface theres only frozen water at the poles and in some craters, winding canyons similar to some on earth suggesting water flow in past.