Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Solar system and exoplanets > Lecture 13 > Flashcards

Lecture 13 Flashcards

1
Q

In planetary science the term “ice” refers to

A

volatile
compounds with freezing points above ~ 100 K (-173°C)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Ice giants are _______ than gas giants

A

smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The ice giants in our solar system are?

A

Uranus and Neptune.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Uranus and Neptune consist of about ______ Hydrogen(H) and Helium(He) by mass.

A

20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Jupiter and Saturn, which are
more than ___ H and He by mass

A

90%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

referred to as “ice giants” because

A

they are comprised mainly of a
hot dense fluid of “icy” materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the hot dense fluid of “icy” materials of Uranus and Neptune

A

water(H20), methane(CH4), and ammonia(NH3) above a small rocky core

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Gas Giants have _____ H/He atmospheres

A

Thicker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ice Giants have _____ H/He atmospheres

A

Thinner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Gas Giants Atmospheres contain _____ Methane

A

Very Little

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Ice Giants Atmospheres contain ____ Methane

A

~2%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Gas Giants interior dominated by

A

metallic hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Ice Giants Interior dominated by

A

“ices” water(H20), methane(CH4), and ammonia(NH3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Ice Giants are of _______ mass while Gas Giants are ____

A

intermediate, very massive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Gas Giants are how many AU from the sun (astronomical unit)

A

5-10 AU from sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ice Giants are how many AU from the sun (astronomical unit)

A

20-30 AU from sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Water is abundant in the outer solar system, and the densities
of the ice giants are very similar to that of _____

A

water(H2O)

18
Q

What makes Uranus and Neptune appear blue?

A

methane

19
Q

Mantle of ice giants consists of

A

water(H20), methane(CH4), and ammonia(NH3)

20
Q

Ice giants atmosphere is consists of

A

helium, methane gases, hydrogen

21
Q

Uranus
Orbital Period
(years)

A

84

22
Q

Neptune Orbital Period Years

A

65

23
Q

Uranus Distance from Sun

A

(AU) 19.2

24
Q

Neptune Distance from sun

A

50 AU

25
Q

Uranus and Neptune radius

A

4 x earths

26
Q

Uranus Mass

A

14.5 x earth

27
Q

Neptune Mass

A

17 earth

28
Q

Rotation period hours Uranus

A

17

29
Q

Rotation period hours Neptune

A

16

30
Q

Uranus is the ____ planet from the sun

A

seventh

31
Q

Uranus has ____ known moons and ____ known rings

A

27, 13

32
Q

Uranus rotates in a ______ direction (like Venus) and its
axial tilt is ___.

A

clockwise, 98degrees

Theory is a planet-sized body collided with Uranus at a high speed, causing the planet to tilt and giving it its current orientation.

33
Q

Theories on how the rings around Uranus and Neptune were formed -maintained by the gravitational influence of nearby moons. As the moons orbit their respective planets, they create regions where the gravitational pull is stronger or weaker, which can cause particles in the rings to either clump together or break apart.

A

the remnants of debris from the collision of large bodies that were disrupted by the planets’ gravity.

material that was left over from the formation of the planets themselves, but that did not accrete into moons

34
Q

Theories on how the rings around Uranus and Neptune
are maintained

A

by the gravitational influence of nearby moons. can cause particles in the rings to either clump together or break apart.

35
Q

The five largest (major) moons of Uranus
are

A

Miranda, Ariel, Umbriel, Titania, and
Oberon

36
Q

The major moons of Uranus are

A

ellipsoidal

37
Q

four of Uranus’s moons show signs of
internally driven processes such as

A

volcanism on their surfaces

38
Q

The largest of the five moons of Uranus is,

A

Titania, is 1,578km in diameter and the eighth-largest moon in the Solar System

39
Q

Uranus has __ distinct rings made up of

A

13, mainly water ice

40
Q

“core accretion model,” explains how gas giants like Jupiter and Saturn could have

A

formed

41
Q

core accretion model struggles to explain the in situ formation of Uranus and Neptune, which are classified as ice giants rather than gas giants. Whats the main issue?

A

much less massive than Jupiter and Saturn, yet they are still composed primarily of ices rather than gases.

Solar system and exoplanets (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions