Astronomy Flashcards

(47 cards)

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

19
Q

What planet has a retrograde rotation

A

venus and uranus

20
Q

What astronomer wrote math laws in reference to ellipses

21
Q

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

22
Q

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

23
Q

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

24
Who wrote Universal Law of Gravitation
Newton
25
Object that burns when it hits our atmosphere
Meteor
26
Object from space that hits our atmosphere
Meteorite
27
What's in the Kuiper Belt
Dwarf planets
28
Whats in Oort cloud
Comet
29
30
short period comets come around every ..... years
100
31
What is an arching on the sun called
Prominence
32
How are we affected by solar events on the sun
Northern lights, Disrupt satellites and technology
33
Formula for fusion
E=MC2
34
how much hydrogen is left in core of sun
50%
35
stars and galaxies moving towards us is what shift
Blueshift
36
Sun
8min
37
Proxima Centauri
4.21ly
38
Sirius
9ly
39
Polaris
700ly
40
Whats fusing in a Main Sequence Star
Hydrogen to Helium
41
What surrounds a white dwarf
planetary nebula
42
Whats fusingin a red giant star
Helium to Carbon
43
When did big bang occur
13.8 billion years ago
44
What instrument tells us that a star has hydrogen and helium
Spectrometer and puts it in colored bands
45
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