Chapter 22 - The Sun, Moon, And Earth System Flashcards

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0
Q

What is the sun mostly composed of

A

Hydrogen

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1
Q

The distance between the earth and sun

A

Astronomical unit

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2
Q

What state is the sun in?

A

Plasma

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3
Q

What is solar wind made of

A

Protons and electrons

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4
Q

Which temperatures are higher: photosphere or corona?

A

Corona

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5
Q

Where do thermo nuclear reactions occur?

A

The sun’s core

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6
Q

What are severe solar storms called?

A

Solar flares

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7
Q

Which density is greater: moon or Earth?

A

Earth

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8
Q

What is the moon’s gravity compared to the Earth’s?

A

The moon’s gravity is one-sixth of the earth’s

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9
Q

Why doesn’t the moon have a large atmosphere?

A

It doesn’t have much mass

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10
Q

Which theory says that the earth and moon both formed from the same cloud?

A

Accretion

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11
Q

The apparent path that the sun goes through

A

Ecliptic

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12
Q

The average distance from the center of the moon to the center of the earth

A

More than 340,000

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13
Q

Is the moon waxing or waning in the beginning of the cycle?

A

Waxing

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14
Q

What phase must the moon be for a lunar eclipse to occur?

A

Full moon

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15
Q

Where does the convective current take place?

A

Convective zone

16
Q

What is the plasma called that leaves the sun and loops back around?

A

Solar prominences

17
Q

What do scientists use to block out the sun to see the corona?

A

Coronagraph

18
Q

What evidence do we have that the sun is spinning on its axis?

A

Sunspots

19
Q

What is the most spectacular crater on the moon?

A

Tycho

20
Q

Which way do cusps face?

A

Away from the sun

21
Q

What is the nickname for the moon in mid to late September?

A

Harvest moon

22
Q

Where is the moon in a solar eclipse?

A

In between the earth and the sun

23
Q

What is the outer layer of the sun’s atmosphere?

A

Corona

24
Q

What is the visible surface of the sun called?

A

Photosphere

25
Q

Where does radiation happen on the sun?

A

Radiative zone

26
Q

What’s a specific kind of solar flare?

A

Coronal mass ejection

27
Q

What are the pointed jets on the chromosphere?

A

Spicules

28
Q

Depressions on the moon

A

Craters

29
Q

Points of crescent moon

A

Cusps

30
Q

When the moon is lined up with the sun

A

Eclipse

31
Q

Large dark areas on the sun

A

Sunspots

32
Q

When the moon is closest to the earth

A

Perigee

33
Q

Large dark areas on the moon

A

Marias