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Exam reviews > Astronomy > Flashcards

Astronomy Flashcards

1
Q

Light areas on Moon

A

Highlands

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2
Q

Dark areas on moon

A

Maria

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3
Q

How old are the craters on the moon

A

4 billion

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4
Q

What technology did we leave on the moon

A

seismograph

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5
Q

Giant Impact Theory

A

formation of moon

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6
Q

Revolution

A

year

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6
Q

Rotation

A

Day

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7
Q

How much is the earth tilted

A

23.5

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8
Q

Causes seasons

A

Tilt

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9
Q

Summer solstice the suns rays are 90 degrees to the..

A

Tropic of Cancer

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10
Q

Winter solstice the suns rays are 90 degrees to the..

A

Tropic of Capricorn

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11
Q

During the Equinox the axis is pointed towards….

A

The equator

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12
Q

How many years for earth to wobble

A

2600

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13
Q

What is earths wobble called

A

Precession

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14
Q

When lit portion of moon is getting bigger

A

Waxing

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15
Q

When lit portion is getting smaller

A

Waning

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16
Q

Earths path around the sun is not smooth because

A

Pull of the moons gravity

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17
Q

Moon rise changes how many minutes everyday

A

42 minutes

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18
Q

What planet rains acid

A

Venus

19
Q

What planet has a retrograde rotation

A

venus and uranus

20
Q

What astronomer wrote math laws in reference to ellipses

A

Kepler

21
Q

What astronomer looked at Jupiter and proved the sun was at the center of the solar system

A

Galileo

22
Q

What astronomer looked at galaxies and said they were not just clouds of dust

A

Edwin Hubble

23
Q

Who incorrectly had us thinking earth was the center of Universe(geocentric)

A

Aristotle

24
Q

Who wrote Universal Law of Gravitation

A

Newton

25
Q

Object that burns when it hits our atmosphere

A

Meteor

26
Q

Object from space that hits our atmosphere

A

Meteorite

27
Q

What’s in the Kuiper Belt

A

Dwarf planets

28
Q

Whats in Oort cloud

A

Comet

29
Q
A
30
Q

short period comets come around every ….. years

A

100

31
Q

What is an arching on the sun called

A

Prominence

32
Q

How are we affected by solar events on the sun

A

Northern lights, Disrupt satellites and technology

33
Q

Formula for fusion

A

E=MC2

34
Q

how much hydrogen is left in core of sun

A

50%

35
Q

stars and galaxies moving towards us is what shift

A

Blueshift

36
Q

Sun

A

8min

37
Q

Proxima Centauri

A

4.21ly

38
Q

Sirius

A

9ly

39
Q

Polaris

A

700ly

40
Q

Whats fusing in a Main Sequence Star

A

Hydrogen to Helium

41
Q

What surrounds a white dwarf

A

planetary nebula

42
Q

Whats fusingin a red giant star

A

Helium to Carbon

43
Q

When did big bang occur

A

13.8 billion years ago

44
Q

What instrument tells us that a star has hydrogen and helium

A

Spectrometer and puts it in colored bands

45
Q
A
46
Q
A

Exam reviews (2 decks)

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