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Science > Moon > Flashcards

Moon Flashcards

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
Q

It takes how long for a LOW tide to occur?

A

8 hours

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25
Q

How many high and low tides are there per day?

A

2 high

2 low

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26
Q

New moon:

A
  • spring tides H-H & L-L

- passes between earth and sun

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27
Q

First quarter:

A
  • neap tides L-H & H-L
  • 1 week
  • 6 days
28
Q

Waxing crescent:

A
  • latin means to grow, develop, to increase
  • increase of moon light
  • 3 to 4 days
29
Q

Waxing gibbous:

A
  • latin means more than half
30
Q

Full moon:

A
  • Entirely illuminated
  • moon rises just as the sun is setting
  • sun rises when moon sets
  • 2 weeks
31
Q

How long does the lunar cycle last?

A

29.5 days

32
Q

Waxing Gibbous:

A
  • Latin meaning more then half

- loosing light instead of gaining

33
Q

3rd quarter:

A
  • last quarter
  • neap tides occur
  • L-H & H-L
34
Q

Waiting crescent:

A
  • 4th week

- illumination on left side

35
Q

The distance form the moon to the sun is what?

A

240-250,000 miles

36
Q

Do we see both sides of the moon?

A

No we only see the near side

37
Q

Maria:

A

Dark areas on the moon

38
Q

The moon doesn’t not have…

A

Air, water, clouds, life

39
Q

Highlands:

A

Light areas on the moon do to be higher

40
Q

What is the dark colored lava rock found on moons surface and below?

A

Basalt

41
Q

How many layers of the moon?

A

3
Core
Mantle
Crust

42
Q

How thick is the crust?

A

110 miles

Full of least dense rock

43
Q

Solar eclipse:

A

When the moon passes directly over the sun

During new moons

44
Q

Lunar eclipse:

A

The moon becomes dat because it passes in earths shadow

45
Q

Total eclipse:

A

When the moon passed completely in the earths umbra

46
Q

Umbra:

A

Darkest part of earth’s shadow

47
Q

Penumbra:

A

Lighter part of earth’s shadow

48
Q

The sun’s diameter is more then ____x greater the earth’s

A

100

48
Q

The sun’s atoms combine during what process?

A

Nuclear fusion

49
Q

Some of the sun’s energy reaches earth as…

A

Thermal energy and light

50
Q

The movement of one object around another object

A

Revolution

51
Q

The path a revolving object follows its…

A

Orbit

52
Q

What does the force of gravity depend on?

A

The masses of the objects

53
Q

Looking at earth from above the North Pole, earth rotates in what motion?

A

Counterclockwise

54
Q

When the light shines on a tilted surface, the light is more ____________ than it would be on the surface that is not tilted

A

Spread out

55
Q

Because of the tilt of earth’s axis, earth’s surface becomes more tilted as you move away from the ________

A

Equator

56
Q

What regions on earth receive the least amount energy?

A

The poles

57
Q

Earth’s season change in a yearly cycle because of the tilt of its rotation axis and earth’s _______ around the sun

A

Rotation

58
Q

During a _______, earth’s rotation axis is the most toward or away from the sun

A

Solstice

59
Q

Earth’s axis does not lean toward or away from the sun during an…

A

Equinox

60
Q

September Equinox:

A

First day of fall in Southern Hemisphere

Equal amount of sunlight and darkness

61
Q

March Equinox:

A

First day of spring in the northern hemisphere

Sunlight and darkness is equal

62
Q

What rotation makes the sun appear to move across the sky

A

West to east

63
Q

Earth’s rotation is almost…

A

Circular

Almost egg shaped

64
Q

The light energy absorbed by a surface depends on…

A

The tilt of the surface

65
Q

A beam of light becomes more spread out as…

A

The surface tilts away from it

66
Q

Energy is carried to earth in…

A

A beam of sunlight

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