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Moon Flashcards

(68 cards)

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0
Q

What is at the end of the axis

A

North and south poles

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1
Q

Earths rotation around an imaginary line going through the center of the planet

A

Earth’s axis of rotation

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2
Q

Earth rotates every ____ hours

A

24 hours

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3
Q

The sun’s ________ ____ causes earth to orbit the sun

A

Gravitational pull

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4
Q

Earth’s orbit is _____ million miles diameter

A

200

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5
Q

It takes Earth ______ to rotate around the sun

A

1 year

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6
Q

Earth rotates at a ___ degrees angle/tilt

A

23*

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7
Q

In January the earth it is __% closer to the sun

A

3%

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8
Q

Seasons:

A
  • patterns in temperature and weather

- changes over the course of the year

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9
Q

Where do the largest temperature changes occur

A

North and South poles

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10
Q

Equinox:

A

When sunlight equally on northern and Southern Hemisphere

March and September 22

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11
Q

Solstice:

A

The area of sunlight is at a minimum in one hemisphere and a maximum in the other

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12
Q

September Equinox:

A
  • sunlight is equal on the 2 spheres
  • beginning of fall in the northern hemisphere
  • beginning of spring in the Southern Hemisphere
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13
Q

December solstice:

A
  • when the poles lean as far away from the sun during a year
  • North Pole in darkness - winter
  • South Pole in light - summer
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14
Q

March Equinox:

A
  • half of the hemisphere is in sunlight
  • sunlight is on center of the equator
  • poles are at border between night and day
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15
Q

June solstice:

A
  • longest day of the year
  • first day of summer
  • North Pole is toward the sun
  • beginning of summer in northern hemisphere
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16
Q

Why do seasons change?

A

Change in sunlight shifts between hemispheres

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17
Q

How does light strike the ground?

A
  • at a greater right angle
  • sun low in the sky hits at a slant
  • long shadows - less warmth (summer vs winter)
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18
Q

Earths axis:

A

Imaginary line that runs from the north and South Pole on with the earth rotates on

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19
Q

Farther from the equator =

A

Colder temperature

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20
Q

When we see moonlight is it actually…

A

Light being reflected off the moon’s surface

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21
Q

High tides and low tides are caused by…

A

The moon’s gravity

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22
Q

Does the moon pull the same amount of force?

A

No
-it pulls hardest on the side of earth nearest it
-less hard on the center of the earth
-even less hard on the other side of earth
(Causes the ocean’s tides to rise and fall)

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23
Q

It takes how long for a HIGH tide to occur?

A

6 hours

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24
It takes how long for a LOW tide to occur?
8 hours
25
How many high and low tides are there per day?
2 high | 2 low
26
New moon:
- spring tides H-H & L-L | - passes between earth and sun
27
First quarter:
- neap tides L-H & H-L - 1 week - 6 days
28
Waxing crescent:
- latin means to grow, develop, to increase - increase of moon light - 3 to 4 days
29
Waxing gibbous:
- latin means more than half
30
Full moon:
- Entirely illuminated - moon rises just as the sun is setting - sun rises when moon sets - 2 weeks
31
How long does the lunar cycle last?
29.5 days
32
Waxing Gibbous:
- Latin meaning more then half | - loosing light instead of gaining
33
3rd quarter:
- last quarter - neap tides occur - L-H & H-L
34
Waiting crescent:
- 4th week | - illumination on left side
35
The distance form the moon to the sun is what?
240-250,000 miles
36
Do we see both sides of the moon?
No we only see the near side
37
Maria:
Dark areas on the moon
38
The moon doesn't not have...
Air, water, clouds, life
39
Highlands:
Light areas on the moon do to be higher
40
What is the dark colored lava rock found on moons surface and below?
Basalt
41
How many layers of the moon?
3 Core Mantle Crust
42
How thick is the crust?
110 miles | Full of least dense rock
43
Solar eclipse:
When the moon passes directly over the sun | During new moons
44
Lunar eclipse:
The moon becomes dat because it passes in earths shadow
45
Total eclipse:
When the moon passed completely in the earths umbra
46
Umbra:
Darkest part of earth's shadow
47
Penumbra:
Lighter part of earth's shadow
48
The sun's diameter is more then ____x greater the earth's
100
48
The sun's atoms combine during what process?
Nuclear fusion
49
Some of the sun's energy reaches earth as...
Thermal energy and light
50
The movement of one object around another object
Revolution
51
The path a revolving object follows its...
Orbit
52
What does the force of gravity depend on?
The masses of the objects
53
Looking at earth from above the North Pole, earth rotates in what motion?
Counterclockwise
54
When the light shines on a tilted surface, the light is more ____________ than it would be on the surface that is not tilted
Spread out
55
Because of the tilt of earth's axis, earth's surface becomes more tilted as you move away from the ________
Equator
56
What regions on earth receive the least amount energy?
The poles
57
Earth's season change in a yearly cycle because of the tilt of its rotation axis and earth's _______ around the sun
Rotation
58
During a _______, earth's rotation axis is the most toward or away from the sun
Solstice
59
Earth's axis does not lean toward or away from the sun during an...
Equinox
60
September Equinox:
First day of fall in Southern Hemisphere | Equal amount of sunlight and darkness
61
March Equinox:
First day of spring in the northern hemisphere | Sunlight and darkness is equal
62
What rotation makes the sun appear to move across the sky
West to east
63
Earth's rotation is almost...
Circular | Almost egg shaped
64
The light energy absorbed by a surface depends on...
The tilt of the surface
65
A beam of light becomes more spread out as...
The surface tilts away from it
66
Energy is carried to earth in...
A beam of sunlight

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