Brainscape's Knowledge GenomeTM

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


See full index

Earth Science > Lesson 2: The Solar System > Flashcards

Lesson 2: The Solar System Flashcards

1
Q

This is the center of the solar system

A

Sun

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

The sun mostly consists of these 2 elements

A

hydrogen and helium

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

This is the process that releases the Sun’s energy.

A

nuclear fusion

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

The sun accounts for __% of our solar system’s mass

A

99%

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

What is the biggest planet in the milky way?

A

Jupiter

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

What are the 8 planets

A

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

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

This is known as the dwarf planet

A

Pluto

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

What are the planets that don’t have moons?

A

Mercury and Venus

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

How long does it take for the earth to travel around the sun?

A

365 days

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

How many moons does Jupiter have?

A

63

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

Moons are called natural _____

A

satellites

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

A regular, repeating path that one object in space takes around another one.

A

orbit

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

What do planets orbit?

A

Sun

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

This theory suggests that the universe began with a huge explosion

A

The Big Bang Theory

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

When was the universe created?

A

10-15 billion years ago

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

When was the Sun and the other planets created?

A

5 billion years ago

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

When did earliest life forms appear on earth

A

3.8 billion years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The earliest plants and animals appeared _______ years ago

A

700 million

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

When did dinosaurs become extinct?

A

65 million years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

When did modern humans appear

A

100,000 years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

In 150 AD, who suggested that the Sun is the center of the Solar System?

A

Ptolemy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

In 1533 AD, who created a model of the solar system in which the Sun is at the center and the planets move in circles?

A

Copernicus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Did the planets spin in Copernicus’ model?

A

No

24
Q

A book that suggests planets move in elliptical orbits

A

Astronomia nova

25
Q

Who published the Astronomia nova?

A

Johannes Kepler

26
Q

Who pioneered the use of the telescope?

A

Galileo Galilei

27
Q

This was launched to provide views that cannot be seen by regular telescopes

A

Hubble Space Telescope

28
Q

What is the shape of the planets’ orbit?

A

Elliptical

29
Q

In which direction do planets revolve around the sun?

A

counterclockwise

30
Q

Two kinds of planets

A

Terrestrial and Jovian

31
Q

Which planets are terrestrial?

A

Mercury, Venus, Earth, Mars

32
Q

Which planets are Jovian

A

Jupiter, Saturn, Uranus, Neptune

33
Q

Are craters seen on jovian planets?

A

No. They don’t have a solid surface.

34
Q

(T/F) All jovian planets have rings.

A

true. Not only Saturn

35
Q

Small objects made of rocks that evolve around the Sun. They are also known as planetoids or minor planets.

A

Asteroids

36
Q

Mostly in highly elliptical orbits, occasionally coming close to the Sun

A

Comets

37
Q

Small dust grains throughout the solar system

A

Meteoroids

38
Q

meteoroid that enters the Earth’s atmosphere that produces a streak of light

A

Meteor

39
Q

portion of meteoroid or asteroid that hits the ground without being destroyed

A

Meteorite

40
Q

A swarm of trillions of comet nuclei

A

Oort cloud

41
Q

These are natural objects that orbit around the planets.

A

Satellite

42
Q

It is a motion opposite to the Earth and other planets’ turn.

A

Retrograde

43
Q

It is a disc-shaped region of icy bodies including dwarf

planets and comets beyond the orbit of Neptune.

A

Kuiper Belt

44
Q

It occupies the orbit between Mars and Jupiter which

is made of rocks and stone.

A

Asteroid Belt

45
Q

What theory: Hydrogen and other gases swirled around and condensed into our Sun and planets

A

Nebular hypothesis

46
Q

What theory: One day the sun burst open and planets and moons shot out and went to their respective places

A

Fission theory

47
Q

What theory: Planets and moons were flying around and they were captured by the Sun

A

Capture theory

48
Q

What theory: space dust and rock chunks formed the planets and moons.

A

Accretion theory

49
Q

What theory: Our world collided with a small planet and the rocks from the explosion became the moon

A

Planetary Collision theory

50
Q

What theory: Our planets, moon, and stars spun off from the collision between stars

A

Stellar Collision theory

51
Q

What theory: Gas clouds were captured by the Sun and became planets and moons

A

Gas Cloud theory

52
Q

Planet formation starts with clumping together of grains of solid matter:

A

planetesimals

53
Q

Planetesimal grow through ______ and _______

A

condensation and

accretion

54
Q

Which model of the Solar System says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it

A

Geocentric model

55
Q

Which model of the solar system consider the sun as the center, and the planets revolve around the sun

A

Heliocentric model

Earth Science (3 decks)

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