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qrt2 > sun (manmade) > Flashcards

sun (manmade) Flashcards

1
Q

nearest star to our planet

A

sun

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2
Q

distance of the sun from earth

A

93 million miles

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3
Q

diameter of the sun

A

864,000 miles

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4
Q

volume of the sun

A

1,250,000 times greater than earth

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5
Q

lifespan of the sun

A

11billion years

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6
Q

three main layers of the atmosphere of the sun

A
  1. photosphere
  2. chromosphere
  3. corona
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7
Q

the light sphere and the main body of the sun

A

photosphere

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8
Q

how thick is the photosphere

A

150 miles thick

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9
Q

how hot is the photosphere

A

6000 degrees celsius

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10
Q

the photosphere is characterized by its three disturbances:

A
  1. granules
  2. faculae
  3. sun spots
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11
Q

bubbles of hot gases that appear in cycles of bright and dark spots

A

granules

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12
Q

(small touches) small but sharp eruptions which last for about 15 minutes to 1 hour.

A

faculae

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13
Q

darker cooler areas in the atmosphere. they range from 800 to 80,000 km in diameter.

A

sunspots

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14
Q

the “color sphere”

A

chromosphere

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15
Q

extends from 5000 to 8000 miles thick when observed during total solar eclipse using an instrument

A

chromosphere

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16
Q

the outermost layer of the sun’s atmosphere.

A

corona

17
Q

only visible during solar eclipse

A

corona

18
Q

corona‘s shape varies with the

A

eleven year period of sunspots

19
Q

formed by the vapors emitted by the bubbling areas in the photosphere.

A

corona

20
Q

gigantic eruptions that bombard the earth’s electromagnetic waves

A

solar flares

21
Q

the electromagnetic waves take how many minutes to reach the earth after the initial burst?

A

8

22
Q

the sun continually emits a stream of charged particles known as the _ into space

A

solar wind

23
Q

travels at high speeds and has a significant impact on the magnetospheres of planets and space weather conditions

A

solar winds

24
Q

large, looping structures of gas extending from the sun’s surface into the outer atmosphere

A

solar prominences

25
Q

temporary phenomena on the sun’s surface caused by the intense magnetic activity

A

sun spots

26
Q

appear as dark spots because they are cooler than the surrounding areas

A

sun spots

27
Q

11 year cycle marked by the changes in solar activity

A

the solar cycle

28
Q

11 year cycle marked by the changes in solar activity

A

the solar cycle

29
Q

the sun is situated about how many light years away from the galactic center

A

27,000

qrt2 (3 decks)

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