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Flashcards in Solar System Deck (34)
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1
Q

Asteroid

A

A small object that’s made of rock that orbits the sun.

2
Q

Astronomical unit

A

The average distance from the sun which is about 93,000,000 miles.

3
Q

Comet

A

A body of ice and dust that orbits the sun.

4
Q

Crater

A

A round pit left on a surface left by something that hit the surface.

5
Q

Crescent moon

A

A quarter of the moon is illuminated.

6
Q

Equinox

A

The time or date twice a year.

7
Q

Ellipse

A

An oval or flattened round object.

8
Q

Eclipse

A

It’s when the sun, moon, and moon all meet.

9
Q

Galaxy

A

A group of solar systems, gases, and dust are held together by gravity.

11
Q

Gas giant

A

Planets that are mostly gas.

12
Q

Gibbous moon

A

A moon that’s looks half illuminated but is less than full.

13
Q

Geocentric

A

Having the earth as the center.

14
Q

Meteor

A

A streak of light in the sky.

14
Q

Meteorite

A

A piece of rock that strikes earth’s surface.

15
Q

Gravity

A

A force that’s in between two objects.

16
Q

Heliocentric

A

Sun centered in the solar system.

17
Q

Impact crater

A

A bowl shaped cavity in a planet’s ground.

18
Q

Orbit

A

Its where a planet goes in a circle around the sun.

19
Q

Mare

A

Astronomers mistook them for oceans.

21
Q

New moon

A

The entire surface of the moon isn’t illuminated.

22
Q

Solar system

A

It’s where the sun and planets are.

23
Q

Quarter moon

A

Half of the moon is illuminated.

24
Q

Penumbra

A

Region of lighter shadow that might surround a dark central region.

25
Q

Revolution

A

The orbiting of a planet around another planet.

26
Q

Satellite

A

An artificial object that orbits around another thing in space.

27
Q

Rotation

A

The spinning of a celestial body such as a planet.

28
Q

Season

A

A period of the year on a planet.

29
Q

Solstice

A

It’s when the sun reaches its highest or lowest point.

32
Q

Terrestrial planet

A

A planet that is rocky or bumpy.

33
Q

Umbra

A

The dark part of a sunspot.

33
Q

Tides

A

The rise and fall of the oceans by the gravitational pull of the sun and EARTH.

34
Q

Universe

A

Everything that exists in and on the Earth.

34
Q

Waxing moon

A

It’s when the moon changes or it’s also called the lunar phase.

34
Q

Wannig

A

The gradual decrease of the moon.