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science > outer space vocab > Flashcards

outer space vocab Flashcards

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Biology 101 flashcards
1
Q

photons

A

particles of light and energy

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2
Q

chromosphere

A

a red layer of the sun that is 1000 miles thick

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3
Q

corona

A

the outermost layer or atmosphere of the sun

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4
Q

sunspot

A

a temporary dark spot on the photosphere layer of the sun

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5
Q

solar flare

A

a sudden eruption in the solar atmosphere.

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6
Q

nebula

A

an interstellar cloud of dust and gas

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7
Q

main sequences star

A

medium size star in the middle of the life span.

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8
Q

red giant

A

a large, cool star of high luminosity

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9
Q

white dwarf

A

after the red giant

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10
Q

photons

A

bundles of electromagnetic radiation also particles of light and energy.

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11
Q

7 main stars

A

OBAFGKM

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12
Q

doppler effect

A

an apparent change in the frequency of a wave caused by the motion of the observer or source.

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13
Q

high frequency

A

the higher the frequency the shorter the wavelength

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14
Q

low frequency

A

the lower the frequency the longer the wavelength

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15
Q

blue shift

A

decrease in wavelength

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16
Q

redshift

A

an increase in wavelength

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17
Q

radial velocity

A

the velocity that’s directed straight at or way from object

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18
Q

stages of stars life

A

nebula, main sequence star, red giant, white dwarf

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19
Q

layers of sun from inside- outside

A

core,radiation zone, convection zone (circles), photosphere, chromosphere, corona.

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20
Q

big bang theory

A

the current model that describes the early development of the universe.

21
Q

Kepler’s first law of planetary motion

A

the orbit of a planet around the sun is an ellipse with the sun at one focus.

22
Q

ellipse

A

an oval shape

23
Q

major axis

A

the max diameter of an ellipse

24
Q

semimajor axis

A

half of the major axis.

25
Q

eccentricity

A

the extent to which an orbit deviates from a circle.

26
Q

vernal equinox

A

the time spring begins in the northern hemisphere and winter in the southern hemisphere

27
Q

summer solstice

A

the beginning of summer in the northern hemisphere and winter in the southern hemisphere.

28
Q

autumn equinox

A

autumn begins in the north and spring in the south.

29
Q

planetesimal

A

a small, irregular shaped body formed by colliding matter.

30
Q

planet

A

an astronomical object that orbits a star & doesn’t shine it’s own light

31
Q

pangea

A

one earth. supercontinent. all together.

32
Q

continental drift

A

the theory that land on earth started as pangea than split into continentals.

33
Q

plate tectonics

A

the theory that the surfaces of the earth is broken into larger pieces of crust called plates.

34
Q

asthenosphere

A

the upper part of the mantle.

35
Q

crust

A

hard outer layer of the earth.

36
Q

fault

A

a crack in the earths crust resulting from the moment of the 2 plates.

37
Q

oceanic crust

A

crust under the ocean, more dense.

38
Q

continental crust

A

crust under the land.

39
Q

divergent boundary

A

a fault where the 2 plates are moving away from each other. volcanoes are common.

40
Q

convergent boundary

A

a boundary where 2 plates collide.forms islands, mountains, and trenches.

41
Q

transform boundary

A

where 2 plates slide past each other. causes earthquakes.

42
Q

convection

A

the rising of warm particles and the sinking of cool particles.

43
Q

water cycle

A

the natural cycling of water through places and phases on earth

44
Q

surface water

A

lakes, rivers, streams on earth.

45
Q

soil moisture

A

water that is in the ground but above ground water.

46
Q

hydrolic cycle

A

the process by which water moves from place to place.

47
Q

hydrosphere

A

the layer of earth where water is present.

48
Q

evaporation

A

when water changes to liquid to gas

49
Q

condensation

A

gas to liquid. (clouds)

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