Vicab 2 Flashcards

1
Q

Gravity

A

The force that attracts a body toward the center of the earth

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2
Q

Tide

A

Tide is the cycle of rising and falling of the surface of the bodies of water.

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3
Q

Waxing

A

A waxing moon is the one that is getting larger each night.

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4
Q

Waning

A

It gets smaller every night

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5
Q

Gibbous moon

A

Between a half moon but less than a full moon

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6
Q

Crescent moon

A

It is less than half illuminated

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7
Q

Full moon

A

The whole moon is illuminated

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8
Q

New moon

A

The Whole moon is dark

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9
Q

Quarter moon

A

The moon is one half illuminated

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10
Q

Perihelion

A

The point in the orbit of a planet which is closer to the sun

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11
Q

Aphelion

A

The point in the orbit of a planet which is furthest away from the sun

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12
Q

Heliocentric

A

Representing the sun as the center as the accepted astronomical model of the solar system

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13
Q

Geocentric

A

Having or representing the earth as the center as in former astronomical systems

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14
Q

Meteorite

A

A meteor that survives its passage through the earths atmosphere

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15
Q

Meteor

A

A small body of matter from outer space

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16
Q

Comet

A

A celestial object consisting of a nucleus of ice and dust

17
Q

Asteroid

A

A small rocky body orbiting the sun

18
Q

Gas giant

A

A large planet of relatively low density

19
Q

Terrestrial

A

A rocky planet is a planet that is composed primarily of silicate rocks or metal

20
Q

Ellipse

A

A regular oval shape traced by a point moving in a plane so that the sum of its distance from two another points

21
Q

Astronomical units

A

A unit of measurement equal to 149.6 kilometers the man distance from the center of the earth

22
Q

Penumbra

A

The partially shaded outer region of the shadow cast by an opaque object

23
Q

Umbra

A

The fully shaded inner region

24
Q

Eclipse

A

An obscuring light from one celestial body by the passage of another

25
Q

Mare

A

Mares are large,dark,basaltic plains on earths moon

26
Q

Solstice

A

When the sun reaches its highest or lowest point in the sky at moon

27
Q

Equinox

A

The sun crosses the celestial equator when day and night are equal

28
Q

Season

A

One of the four periods of the year (spring,summer,autumn, and winter)

29
Q

Revelation

A

The movement of one object around a center or another object

30
Q

Rotation

A

The process or act of turning or circling something

31
Q

Impact crater

A

A crater on a planet or the moon caused by the impact of a meteorite or another object

32
Q

Satellite

A

An artificial body placed in orbit around the earth or the moon

33
Q

Universe

A

All existing matter and space considered as a whole

34
Q

Galaxy

A

A system of millions or billions of stars

35
Q

Solar system

A

The collection of eight planets and their moons in orbit around the sun

36
Q

Orbit

A

The curved path of a celestial object or spacecraft