Space Vocabulary Flashcards

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1
Q

Orbit

A

The circular or elliptical path of an object as it revolves around another object

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2
Q

Solar system

A

A system of objects that revolve around a star

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3
Q

Galaxy

A

A group of solar systems,dust,and gas held together by gravity ; our solar system is part of the Milky Way galaxy

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4
Q

Universe

A

Everything the exists in,on ,and around the earth

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5
Q

Satellite

A

A natural or artificial object that revolves around another object in space

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6
Q

Impact crater

A

A crater on a planet or moon caused by the impact of a meteorite or other object , typically round with raised trim

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7
Q

Rotation

A

The spinning of a celestial body,such as a planet, around axis

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8
Q

Revolution

A

The orbiting of an object around another object

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9
Q

Season

A

A period of the year determined by the position of the earth as it revolves around the sun

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10
Q

Equinox

A

The twice a year occurrence during which earths axis is perpendicular (90 degree angle) to a line joining the sun in the earths center

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11
Q

Solstice

A

A twice a year occurrence during which the sun appears at the highest point in the sky as seen from the north and South Pole

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12
Q

Mare

A

A large,dark,basaltic plains on Earth’s Moon formed formed by ancient volcanic eruptions

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13
Q

Eclipse

A

An event whereby one astronomical body passes between two other astronomical bodies

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14
Q

Umbra

A

The fully shaded in a region of a shadow cast by an opaque object, especially the area on the earth or miss experiencing check your total pass on an eclipse

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15
Q

Penumbra

A

A partial shadow between regions of foreshadow in for illumination especially as cast by the earth,the moon, or another body during an eclipse

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16
Q

Astronomical unit

A

The mean distance from the center of the earth into the center of the sun to measure distances in the solar system

17
Q

Ellipse

A

A closed plane curve that results from the intersection of a plane cutting through a cone

18
Q

Terrestrial planet

A

Telluric planet, or rocky planet is composed primarily of silicate or metals

19
Q

Gas giant

A

A large, massive, low density planet composed primarily of hydrogen,helium,and ammonia in either gaseous or liquid state

20
Q

Asteroid

A

A small objects into made of rock or metal that orbits the sun

21
Q

Comet

A

A body of ice and dust that travels in a long narrow orbit around the sun

22
Q

Meteor

A

A streak of light is in the sky that forms when a piece of rick from space burns up in Earth’s atmosphere

23
Q

Meteorite

A

A piece of rock or metal from space that strikes earths surface

24
Q

Geocentric

A

Having the earth as the center

25
Q

Heliocentric

A

Having the sun as the center

26
Q

Gravity

A

A force that exist between any two objects that have mass

27
Q

Tide

A

The regular function of seawater by the gravity national pool of the moon and sun on earths oceans and other large bodies of water

28
Q

Waxing

A

Or wanting gibbous moon, which means more than half of what is eliminated

29
Q

Waning

A

Where crescent is between a half moon and new moon,like a silver

30
Q

Gibbous moon

A

A body in outer space that orbits a planet;a natural satellite

31
Q

Crescent moon

A

A crescent is a thin, curved shape that’s thicker in the middle and tapers to thin points at each end, like the little sliver of moon you might notice in the sky.

32
Q

Full moon

A

full, full phase of the moon, full-of-the-moon

33
Q

New moon

A

the phase of the moon when it is in conjunction with the sun and invisible from earth, or shortly thereafter when it appears as a slender crescent.

34
Q

Quarter moon

A

A quarter moon occurs when we see the Moon half illuminated by the Sun, and half enshrouded in darkness. Since the illuminated side points towards the Sun, it tells astronomers that the Moon and the Sun are separated by 90-degrees from our perspective here on Earth.

35
Q

Perihelion

A

the point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.

36
Q

Aphelion,

A

the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun.