Brainscape's Knowledge GenomeTM

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


See full index

GNAV > The Solar System & Time > Flashcards

The Solar System & Time Flashcards

1
Q

What is the point where the Sun is furthest from the earth called?

A

Aphelion

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

What is the point when the Sun is closest to the earth?

A

Perihelion

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

When is the highest speed of the earth in it’s orbit?

A

At perihelion

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

When is the lowest speed of the earth in it’s orbit?

A

At Aphelion

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

When does Perihelion occur?

A

January

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

When does Aphelion occur?

A

July

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

What is the cause of the seasons?

A

The earth’s tilt

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

When does the NH experienec summer?

A

When it is tilted most towards the sun

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

What caused the longer nights in winter and lonber days in summer?

A

The earth’s tilt.

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

What is the name given to the apparent path of the Sun on the celestial sphere?

A

Ecliptic

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

What is the name given to the orbital path of the earth?

A

Ecliptic

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

What is the angle between the plane of the ecliptic and the earth’s equator?

A

23.5 °

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

What is the tropic of Cancer?

A

23.5°N

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

What is the tropic of Capricorn?

A

23.5°S

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

What is the tropic of Capricorn?

A

23.5°S

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

What do the tropic of Cancer and tropic of Capricorn represent?

A

The highest latitudes where the sun will be directly overhead.

17
Q

What do the tropic of Cancer and tropic of Capricorn represent?

A

The highest latitudes where the sun will be directly overhead.

18
Q

What are the Polar circles?

A

The Arctic circle and the Antarctic circle.

19
Q

What are the latitudes of the Arctic and Antarctic circles?

A

65.5°N and 65.5°S

20
Q

What does the position of the polar circles depend on ?

A

The earth’s axial tilt.

21
Q

How much does the earth’s axial tilt vary?

A

Within a margin of 2° every 40,000 years.

22
Q

What is the reason for the variation of the earth’s axial tilt?

A

tidal forces resulting from the moon

23
Q

What are the frigid zones?

A

The areas between the polar circles and the poles.

24
Q

What are the equinoxes?

A

The times when the relative length of night and day and the elevation of the noon Sun, known as the declination of the Sun, are changing at the greatest rate.

25
Q

What is Kepler’s first law?

A

The Orbit of each planet is an ellipse with the Sun at one of the foci.

26
Q

What is Kepler’s second law?

A

The line joining the planet to the Sun, know as the radius vector, sweeps out equal area in equal time.

27
Q

What is Kepler’s third law?

A

The square of the time a planet takes to go around the Sun is proportional to the cube of its mean distance from the Sun.

28
Q

How long is a sideral day?

A

23hrs 56mins 4 secs

29
Q

What is the analemma?

A

The position of the noon sun compared with the mean value.

30
Q

When are the mean sun and the apparent sun farthest apart?

A

February and November.

GNAV (2 decks)

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