Planet Vocabulary Flashcards

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1
Q

Orbit

A

An circular 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

Millions or billions of stars held together in a group by there own gravity

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4
Q

Universe

A

Space and all the energy in it

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5
Q

Satellite

A

An object that moves an massive object

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6
Q

Impact crater

A

A Round pit left behind on the surface of a planet or an other body in space

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7
Q

Axis of rotation

A

An imaginary line about which turning body such as earth rotates

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8
Q

Revolution

A

The motion of one body around the other such as earths and its orbit around the sun

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9
Q

Season

A

On part of tempture changes and other weather trends over the course of the year

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10
Q

Equinox

A

In a orbit of portion and the time in wich sunlight shines equally on the northern and Southern Hemisphere a fine of the year when daylight and darkness are nearly equal for most parts of earth

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11
Q

Solstice

A

In a orbit during wich and the hemisphere recives maximum area of sunlight while the other hemisphere review minimum of sunlight. The time of year when days are earthier longest or shortest

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12
Q

Mare

A

A dark plain of solid field lava on The moon

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13
Q

Eclipse

A

An event wich one object in space cast a shadow onto another

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14
Q

Umbra

A

A dark region of shadow such as the cone of complete shadow cast by an object

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15
Q

Penumbra

A

A region of lighter shadow that may surround a dark central spreading cone of a lighter shadow cast by an object.

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16
Q

Astronomical Unit (AU)

A

Average distance from the sun wich is approximately 93,000,000 or 150 kilometers

17
Q

Ellipse

A

An oval or flattened circle.

18
Q

Terrestrial Planet

A

A planet with a rocky surface

19
Q

Gas giant

A

A large planet that consist mostly of gases in dense form

20
Q

Astroid

A

A small solid rocky body that orbits the sun.

21
Q

Comet

A

A body that produces a coma of gas and dust, a small icy body that orbits the sun.

22
Q

Meteor

A

A brief streak of light produced by a particle entering earth

23
Q

Meteorite

A

A small object from outer space that passes through earths atmosphere and reChes the surface

24
Q

Geocentric

A

Earths centered thery of the solar system

25
Q

Heliocentric

A

The suns ce there theroy of the solar system

26
Q

Gravity

A

The force that objects excert another because of their mass.

27
Q

Tide

A

The raise and fall of the ocean levels n caused by the gravitational pull of the moon

28
Q

Waxing

A

A gradual increase of the illumine surface of the moon

29
Q

Wanig

A

A gradual decrease In the illumeted surface of the moon

30
Q

Gibbous

A

More then half but less than fully illuminated

31
Q

Moon

A

The Moon is an astronomical body that orbits planet Earth, being Earth’s only permanent natural satellite.

32
Q

Crescent

A

The crescent symbol is primarily used to represent the Moon, not necessarily in a particular lunar phase. When used to represent a waxing or waning lunar phase, “crescent” or “increscent” refers to the waxing first quarter, while the symbol representing the waning final quarter is called “decrescent”.

33
Q

Full moon

A

The time interval between similar lunar phases—the synodic month—averages about 29.53 days. Therefore, in those lunar calendars in which each month begins on the new moon, the full moon falls on either the 14th or 15th of the lunar month.

34
Q

New moon

A

In astronomy, new moon is the first phase of the Moon, when it orbits as seen from the Earth, the moment when the Moon and the Sun have the same ecliptical longitude. The Moon is not visible [note 1] at this time except when it is seen in silhouette during a solar eclipse when it is illuminated by earthshine.

35
Q

Quarter moon

A

As the moon waxes (the amount of illuminated surface as seen from Earth is increasing), the lunar phases progress through new moon, crescent moon, first-quarter moon, gibbous moon, and full moon.