27 And 29 Flashcards

1
Q

Star

A

A body of gases that gives off tremendous amounts of radiant energy

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2
Q

Spectrometer

A

A decide that separates light into different colors or wavelengths

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3
Q

Spectrum

A

The display of lights and colors that a spectrometer emits

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4
Q

What is the sun’s size

A

Medium size

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5
Q

Star life cycle

A

Nebula, protostar, main sequence, red giant, supernova, and planetary nebula

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6
Q

Dark line spectra

A

Used to reveal certain characteristics of stars such as composition and temp

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7
Q

Blue stars are normally _____ c°

A

35,000-50,000

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8
Q

Red stars are normal _____c°

A

3000c°

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9
Q

Yellow stars

A

5,500c°

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10
Q

Actual motion

A

The way a star actually moves

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11
Q

Apparent Motion

A

How much a star visible moves to eyes on earth, due to the movement of the earth.

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12
Q

Most stars are moving

A

Westward or around Polaris

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13
Q

Circumpolar stars

A

Stars rotating around polaris

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14
Q

Parallax

A

To determine the distance between stars and earth

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15
Q

Nebula

A

Gas cloud

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16
Q

Protostar

A

Nebula material shrinking and flattening into a disk

17
Q

Quasars

A

First objects In universe give off radio signals seem to have evolved into galaxies

18
Q

MVEMJSUN

A

Yes

19
Q

Claudius Ptolemy

A

Geocentric model two types of motion

20
Q

Copernicus

A

Heliocentric.

21
Q

Keplers
Laws

A

Inspired by Brahes observations, law of ellipses, law of equal areas, law of periods (orbit period determined by distance from the sun)

22
Q

Inertia

A

Thing goes at contestant speed until acted upon and outside force

23
Q

Mercury

A

Terrestrial, closeness to the sun and tiny size makes it have very thin atmosphere, rotates very slowly on axis, short orbit period 88 days

24
Q

Venus

A

Orbit period is longer than rotation period, earths twin, carbon dioxide atmosphere very hot,

25
Q

Mars

A

Two moons, smaller than earth, volcanoes, ice caps, canyons, erosion