Brainscape's Knowledge GenomeTM

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


See full index

Earth Science > Solar System > Flashcards

Solar System Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the evidence that earth is actually a sphere?

A
  1. Objects appearing on horizon

2. Shape of Earth’s shadow on the moon during an eclipse

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

What was the ancient view of the Earth?

A

Flat

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

What is the shape of the earth?

A

Spherical

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

Where does the earth bulge?

A

At the equator

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

What is the circumference of the earth?

A

About 40,000 km (24854 miles)

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

What is the average distance to the sun?

A

93,000,000 miles (150,000,000 km)

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

What is the length of a sidereal day?

A

23 hr 56 min

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

How does the Earth have a magnetic field?

A

Due to the convection current in the mantle

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

How many degrees is the magnetic pole off the rotational axis?

A

11.5 degrees

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

How much is the rotational axis tilted from vertical?

A

23.5 degrees

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

What causes the seasons?

A

The tilt of the Earth

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

How does the tilt of the Earth change?

A

Due to the revolution around the sun

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

What is the time of one revolution?

A

365 days 5 h 49 min

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

How does the equinox occur?

A

When the sun is directly over the equator

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

What is the result of the Equinox?

A

Day and night are equal

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

When does the Equinox occur?

A

First day of spring (March 21 or 22)

Fall (Sept 22 or 23)

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

What is the solstice?

A

Sun is directly overhead at its furthest point North or south of equator

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

When does the solstice occur?

A

First day of summer (June 21 or 22)

Winter (Dec 21 or 22)

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

When is Earth closest to the sun?

A

Jan 3

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

When is Earth farthest from the sun?

A

July 4

21
Q

How long does one revolution of the moon take?

A

27.3 days

22
Q

How long is one rotation of the moon?

A

27.3 days

23
Q

What is moonlight?

A

Reflected sun light

24
Q

When does the New Moon occur?

A

Occurs when the moon is between the sun and the Earth

25
Q

What happens during a new moon?

A

Dark side is visible

Moon is present in sky, but difficult to see

26
Q

What happens during a waxing moon?

A

Lit portion of moon is increasing

27
Q

Waxing crescent-

A

Less than half of the right side of the moon is lit

28
Q

First Quarter-

A

Half of the moon is lit (right side)

29
Q

Waxing Gibbous-

A

More than half of the right side of the moon is lit

30
Q

Full Moon-

A

Entire lit side of moon is visible

31
Q

Waning Moon-

A

Lit portion is decreasing

32
Q

Waning Gibbous-

A

Over half of the left side of the moon is lit

33
Q

Third Quarter-

A

Half of the moon is lit (left side)

34
Q

Waning Crescent-

A

Less than half of the left side of the moon is lit

35
Q

What are all the phases of the moon called?

A

The Lunar Cycle

36
Q

How long is 1 lunar cycle?

A

29.5 days

37
Q

Moonrise=

A

When the moon rises on the horizon

38
Q

How much later every day does moonrise occur?

A

50 min

39
Q

Why is moonrise later every day?

A

Every day the Earth needs to catch up to the moon

40
Q

What is an eclipse?

A

When the Earth or moon blocks sunlight from reaching the other

41
Q

What is an umbra?

A

Dark, complete shadow-full eclipse

42
Q

What is a penumbra?

A

Partial, lighter shadow-partial eclipse

43
Q

What is a lunar eclipse?

A

Shadow of earth covers moon

44
Q

Is a lunar eclipse common?

A

Yes

45
Q

Does a lunar eclipse affect a big or small area?

A

Big

46
Q

What is a solar eclipse?

A

Shadow from moon blocks sun

47
Q

Is a solar eclipse common?

A

No

48
Q

Does a solar eclipse affect a big or small area?

A

Small

Earth Science (4 decks)

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