astronomy test Flashcards
1
Q
density compaiered to water Mercury
A
5x
2
Q
density compaiered to water Venus
A
5x
3
Q
density compaiered to water Mars
A
5x
4
Q
density compaiered to water Jupiter
A
1.5x
5
Q
density compaiered to water Saturn
A
1x
6
Q
density compaiered to water Uranus
A
1.5 x
7
Q
density compaiered to water Neptune
A
1.5x
8
Q
Number of moons on Mercury
A
0
9
Q
Number of moons on Venus
A
0
10
Q
Number of moons on Mars
A
2
11
Q
Number of moons on Jupiter
A
63
12
Q
Number of moons on Saturn
A
62
13
Q
Number of moons on Uranus
A
27
14
Q
Number of moons on Neptune
A
13
15
Q
visible to unaided eye? Mercury
A
yes
16
Q
Venus visible to unaided eye?
A
yes
17
Q
is Mars visible to unaided eye?
A
yes
18
Q
is Jupiter visible to unaided eye?
A
yes
19
Q
is Saturn visible to unaided eye?
A
yes
20
Q
is Uranus visible to unaided eye?
A
no
21
Q
is Neptune visible to unaided eye?
A
no
22
Q
Mercury rings?
A
no
23
Q
Venus rings?
A
no
24
Q
Mars rings?
A
no
25
Jupiter rings?
yes
26
Saturn rings?
yes
27
Uranus rings?
no
28
Neptune rings?
no
29
Mercury atmosphere gases
none
30
Venus atmosphere gases
CO2
31
Mars atmosphere gases
CO2
32
Jupiter atmosphere gases
H, CH4, He
33
Saturn atmosphere gases
H, CH4, He
34
Uranus atmosphere gases
H, CH4, He
35
Neptune atmosphere gases
H, CH4, He
36
Mercury Probable Core
Metal
37
Venus Probable Core
Metal
38
Mars Probable Core
Metal
39
Jupiter Probable Core
Rock
40
Saturn Probable Core
Rock
41
Uranus Probable Core
Rock
42
Neptune Probable Core
Rock
43
Mercury distance from the sun
0.4 Au
44
Venus distance from the sun
0.7 Au
45
Mars distance from the sun
1.6 Au
46
Jupiter distance from the sun
5.2 Au
47
Saturn distance from the sun
10 Au
48
Uranus distance from the sun
19.6 Au
49
Neptune distance from the sun
30 Au
50
moon diameter
2200 miles across
51
moon core
rock
52
does the moon have a magnetic feild?
no
53
what is themoon cratered from?
meteor impacts
54
moon density
3.3 X water weight
55
composition of sun
91% Hydrogen
8% Helium
1% other
56
the sun makes up what percentage of solar mass?
99.9%
57
surface temperature of the sun
5800 K
58
sun spots
800 degrees cooler come in pairs
59
solar wind on the sun
hydrogen, electrons, helium escapeing from hot sun surface
60
the milkyway is how long
100,000,000 LY 6 trilloion miles
61
the milky way is how thick in the center
15000 LY
62
the milkyway is how thick
3000 LY thick
63
the milkyway looks like what from the side
a fried egg
64
the milkyway looks like what from the top veiw?
a spiral
65
the milkyway contains how many stars?
300 billion
