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Science Vocabulary > Science_Vocab_GP4_Space_Feb > Flashcards

Science_Vocab_GP4_Space_Feb Flashcards

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1
Q

LIGHT-YEAR

A

Distance that light travels in one (1) year. (1 light-year =9x10 (12) km, speed of light =300,000 km/s)

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1
Q

CONVECTION ZONE

A

where the hot gas moves toward the surface and cooler gas moves deeper into the interior

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2
Q

A cloud of gas and dust

A

NEBULA (nebulae)

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3
Q

PHOTOSPHERE

A

the apparent surface of a star

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3
Q

Distance that light travels in one (1) year. (1 light-year =9x10 (12) km, speed of light =300,000 km/s)

A

LIGHT-YEAR

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4
Q

CHROMOSPHERE

A

the orange-red layer above the photosphere

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4
Q

BLACK HOLE

A

An object whose gravity is so great that no light can escape.

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4
Q

The wide, outermost layer of a star’s atmosphere

A

CORONA

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4
Q

The universe began from one point billions of years ago and has been expanding ever since.

A

BIG BANG THEORY

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5
Q

True brightness of an object.

A

LUMINOSITY

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6
Q

LUMINOSITY

A

True brightness of an object.

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7
Q

SUPERNOVA

A

A enormous explosion that destroys a star

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7
Q

Graph that plots luminosity v. temperature of stars.

A

HERTZSPRUNG-RUSSELL DIAGRAM

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7
Q

A hot dense slowly cooling sphere of carbon

A

WHITE DWARF

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8
Q

Average distance from Earth to the sun, about 150 million km.

A

ASTRONIMICAL UNIT

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8
Q

the apparent surface of a star

A

PHOTOSPHERE

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9
Q

An object whose gravity is so great that no light can escape.

A

BLACK HOLE

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11
Q

NUCLEAR FUSION

A

Process that occurs when the nuclei of several atoms combine into one larger nucleus.

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11
Q

HERTZSPRUNG-RUSSELL DIAGRAM

A

Graph that plots luminosity v. temperature of stars.

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12
Q

STAR

A

Large ball of gas held together by gravity with a core so hot that nuclear fusion occurs.

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13
Q

A shell of cooler hydrogen above a star’s core

A

RADIATIVE ZONE

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14
Q

CORONA

A

The wide, outermost layer of a star’s atmosphere

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15
Q

NUETRON STAR

A

A dense core of neutrons that remain after a supernova

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16
Q

ASTEROID

A

Small, rocky object that orbits the sun in the asteroid belt between Mars & Jupiter.

18
Q

Matter that emits no light at any wavelength

A

DARK MATTER

19
Q

BIG BANG THEORY

A

The universe began from one point billions of years ago and has been expanding ever since.

20
Q

where the hot gas moves toward the surface and cooler gas moves deeper into the interior

A

CONVECTION ZONE

20
Q

Huge collection of stars

A

GALAXIES

22
Q

APPARENT MAGNITUDE

A

Measure of how bright an object appears from Earth.

24
Q

A dense core of neutrons that remain after a supernova

A

NUETRON STAR

26
Q

WHITE DWARF

A

A hot dense slowly cooling sphere of carbon

28
Q

GALAXIES

A

Huge collection of stars

28
Q

DOPPLER SHIFT

A

The shift to a different wavelength

29
Q

spreads light into different wavelengths

A

SPECTROSCOPE

30
Q

the orange-red layer above the photosphere

A

CHROMOSPHERE

32
Q

Process that occurs when the nuclei of several atoms combine into one larger nucleus.

A

NUCLEAR FUSION

33
Q

DARK MATTER

A

Matter that emits no light at any wavelength

35
Q

PERIOD OF ROTATION

A

The time it takes an object to complete one rotation.

37
Q

ASTRONIMICAL UNIT

A

Average distance from Earth to the sun, about 150 million km.

39
Q

Small, rocky object that orbits the sun in the asteroid belt between Mars & Jupiter.

A

ASTEROID

40
Q

APPARENT

A

Appearing to eye or mind.

41
Q

Apparent change in an object?s position caused by looking at it from two different points.

A

PARALLAX

42
Q

Appearing to eye or mind.

A

APPARENT

43
Q

Object made of gas, dust, and ice that moves around the sun in an oval-shaped orbit.

A

COMET

44
Q

NEBULA (nebulae)

A

A cloud of gas and dust

46
Q

RADIATIVE ZONE

A

A shell of cooler hydrogen above a star’s core

47
Q

Path an object follows as it moves around another object.

A

ORBIT

48
Q

ORBIT

A

Path an object follows as it moves around another object.

49
Q

The time it takes an object to complete one rotation.

A

PERIOD OF ROTATION

50
Q

COMET

A

Object made of gas, dust, and ice that moves around the sun in an oval-shaped orbit.

51
Q

SPECTROSCOPE

A

spreads light into different wavelengths

52
Q

PARALLAX

A

Apparent change in an object?s position caused by looking at it from two different points.

53
Q

PERIOD OF REVOLUTION

A

Time it takes an object to travel once around the sun.

54
Q

The shift to a different wavelength

A

DOPPLER SHIFT

55
Q

Measure of how bright an object appears from Earth.

A

APPARENT MAGNITUDE

56
Q

Large ball of gas held together by gravity with a core so hot that nuclear fusion occurs.

A

STAR

57
Q

A enormous explosion that destroys a star

A

SUPERNOVA

58
Q

Time it takes an object to travel once around the sun.

A

PERIOD OF REVOLUTION

Science Vocabulary (17 decks)

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