Moon Flashcards

(44 cards)

1
Q

What is the moon?

A

A natural satellite

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2
Q

Compare the Earth’s and Moon’s size

A

Earth: 7930 mi
Moon: 2160 mi

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3
Q

Compare the Earth’s and Moon’s tilt

A

Earth: 23.5
Moon: 7

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4
Q

Compare the Earth’s and Moon’s temperature

A

Earth: -73 to 48 C
Moon: -107 to 153 C

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5
Q

Compare the Earth’s and Moon’s atmosphere

A

Earth: Thick, mild greenhouse effect
Moon: None

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6
Q

Compare the Earth’s and Moon’s liquid water

A

Earth: At surface
Moon: Ice at poles in shadows

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7
Q

Describe the Moon’s temperature

A

Extreme temperature
Day = 130 C
Night = -190 C

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8
Q

How did the moon form?

A

Formed from impact of Mars-sized “planetsimal” on Earth, debris from both objects melted together to form the moon

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9
Q

When did the moon form?

A

4-5 billion years ago

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10
Q

What are Rolled?

A

Trenchlike valleys

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11
Q

What are Highlands?

A

Mountains up to 7500m tall

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12
Q

How were Craters formed?

A
  1. Meteorite impact on the moon

2. Volcanic action inside the moon

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13
Q

What is Maria?

A

Darkest part of lunar landscape

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14
Q

What was Maria originally thought to be?

A

Seas

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15
Q

How long does it take the moon to orbit the earth?

A

271/3 days

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16
Q

How long does it take for the moon to rotate?

A

27 days

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17
Q

What is a full moon?

A

When the moon is completely visible to us

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18
Q

What is a new moon

A

When the moon is completely invisible to us

19
Q

Why does the same side of the moon always face the Earth?

A

The moon is also rotation

20
Q

What is the far side of the moon like?

A

More craters, very few maria, thicker crust

21
Q

Describe the full moon phase

A

The moon is fully illuminated

22
Q

Describe the new moon phase?

A

The moon is not illuminated at all

23
Q

Describe the waxing phases of the moon

A

The moon is growing in illumination

24
Q

Describe the waning phases of the moon

A

The moon is shrinking in illumination

25
Describe the crescent phases of the moon
The phases where the moon is less than half illuminated
26
Describe the gibbous phases of the moon
The phases where the moon is more than half illuminated
27
Draw a diagram of the phases of the moon
Sj
28
Describe a Lunar Eclipse
1. Moon moves into the Earth's shadow 2. Happens 2 to 3 times per year 3. Lasts 4 hours
29
Describe a solar eclipse
Moon moves between Earth and Sun and casts a shadow on part of the Earth
30
What is an Umbra?
The darker part of a shadow
31
What is a Penumbra?
The lighter part of the shadow
32
What are the 3 lunar eclipses?
1. Penumbral LE 2. Partial LE 3. Total LE
33
Describe a Penumbral Lunar Eclipse
The moon passes through Earth's penumbral shadow
34
Describe a partial lunar eclipse
A portion of the moon passes through Earth's umbral shadow
35
Describe a total lunar eclipse
The entire moon passes through Earth's umbral shadow
36
What are the 3 types of solar eclipses?
1. Partial 2. Annular 3. Total
37
Describe a partial solar eclipse
Part of the sun is covered by the moon
38
Describe a annular solar eclipse
The Sun's center is covered by the moon, leaving its edges uncovered
39
Describe total solar eclipse
The Sun is completely covered by the moon
40
How does the moon cause tides?
The pull of the Moon's gravity
41
Where is high tide?
On the sides facing the moon and on the side facing away from the moon
42
Where is low tide?
On the sides of the Earth
43
How often do the tides change?
Every 12hrs, and 25 1/2 mins
44
How many high tides and low tides are there in a day?
2 each per day