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Science > Space Vocab. > Flashcards

Space Vocab. Flashcards

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1
Q

Orbit

A

The curved path around any object with enough mass to sustain a gravitational pull.

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2
Q

Solar System

A

The sun together with all the planets and other bodies that revolve around it.

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3
Q

Equinox

A

The time and/or date when Day and night are of equal time.

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4
Q

Solstice

A

either of the two times a year when the sun is at its greatest distance from the celestial equator

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5
Q

Tide

A

the periodic rise and fall of the waters of the ocean

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6
Q

Galaxy

A

A system of millions to trillions of stars.

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7
Q

Universe

A

Everything that exists in our world.

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8
Q

Satellite

A

A metal disk meant to sent signals.

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9
Q

Impact Crater

A

An inward circular dent in a celestial object caused by impact by another celestial object.

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10
Q

Axis of Rotation

A

An imaginary pole that marks the middle point that a circular object spins or rotates on.

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11
Q

Revolution

A

The complete orbit around a celestial object from a starting point, all around until it reaches the starting point again.

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12
Q

Season

A

A time of specific weather. (Ex: Spring, Summer, Fall, Winter.)

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13
Q

Umbra

A

the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off

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14
Q

Penumbra

A

the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off

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15
Q

Astronomical unit

A

a unit of length, equal to the mean distance of the earth from the sun

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16
Q

Ellipse

A

a plane curve such that the sums of the distances of each point in its periphery from two fixed points

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17
Q

Terrestrial Planet

A

any of the four planets closest to the sun: Mercury, Venus, Earth, or Mars

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18
Q

Gas Giant

A

Any of the four outer planets.

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19
Q

Asteroid

A

A rock formation that failed to form into a Planet.

20
Q

Comet

A

a celestial body moving about the sun

21
Q

Meteor

A

a transient fiery streak in the sky produced by a meteoroid passing through the earth’s atmosphere

22
Q

Meteorite

A

a mass of stone or metal that has reached the earth from outer space

23
Q

Geocentric

A

having or representing the earth as a center

24
Q

Heliocentric

A

measured or considered as being seen from the center of the sun.

25
Q

Gravity

A

the force of attraction

26
Q

Mare

A

any of the several large, dark plains on the moon and Mars

27
Q

Eclipse

A

the obscuration of the light of the moon by the intervention of the earth between it and the sun

28
Q

Umbra

A

the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off

29
Q

Penumbra

A

the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off

30
Q

Astronomical unit

A

a unit of length, equal to the mean distance of the earth from the sun

31
Q

Ellipse

A

a plane curve such that the sums of the distances of each point in its periphery from two fixed points

32
Q

Terrestrial Planet

A

any of the four planets closest to the sun: Mercury, Venus, Earth, or Mars

33
Q

Gas Giant

A

Any of the four outer planets.

34
Q

Asteroid

A

A rock formation that failed to form into a Planet.

35
Q

Comet

A

a celestial body moving about the sun

36
Q

Meteor

A

a transient fiery streak in the sky produced by a meteoroid passing through the earth’s atmosphere

37
Q

Meteorite

A

a mass of stone or metal that has reached the earth from outer space

38
Q

Geocentric

A

having or representing the earth as a center

39
Q

Heliocentric

A

measured or considered as being seen from the center of the sun.

40
Q

Gravity

A

the force of attraction

41
Q

Waxing

A

to increase in the extent of its illuminated portion before the full moon

42
Q

Wanig

A

to decrease periodically in the extent of its illuminated portion after the full moon

43
Q

Gibbous Moon

A

A period of time when the moon is mostly lit up from the earth’s perspective.

44
Q

Crescent moon

A

A period of time when the moon is partially lit up from the earths perspective

45
Q

Full moon

A

A period of time in which the moon is fully lit from the earths perspective

46
Q

New moon

A

A period of time in which none of the moon is lit up from the earths perspective

47
Q

Quarter moon

A

A period of time in which the moon is halfway lit from the earths perspective

Science (6 decks)

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