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Flashcards in vocabulary Deck (29):
1

The path of an object in space as it gets moved around by gravity

Orbit

2

The sun and its family of orbiting planets and moons and other objects

Solar system

3

Million and billion of stars held together in a group by their own galaxy

Galaxy

4

A round pit left behind on a surface on planet

Impact Carter

5

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

Rotation

6

The orbiting of an object such as the earth orbiting around the sun

Revolution

7

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

Season

8

In an orbit a position and time in which sun shines equally on both hemispheres

Equinox

9

Either of the two rimes in the year (the summer solstice and the winter solstice) when the sun reaches the highest point or lowest point in the sky at noon, marked by the longest or shortest days

Solstice

10

Large, dark, basaltic plains on Earths moon, formed by ancient volcanic eruptions

Mare

11

The fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse

Umbra

12

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

Penumbra

13

A unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the Earth to the center of the sun

Astronomical units

14

The rise and fall of the oceans caused by the gravitational fall of the moon and the sun

Tide

15

Space and all of the matter and energy in it

Universe

16

An object that orbits the earth

Satellite

17

An imaginary line about which a turning body such as earths rotation

Axis of rotation

18

Where the weather changes to the course of the year

Seasons

19

An oval or flattened circle

Ellipse

20

A planet that has a rocky surface

Terrestrial planet

21

A large planet that consist mostly of gasses

Gas giant

22

A body that produces gas and dust

Comet

23

The gravitational increase of the illuminated surface of the moon

Waxing

24

The gradual decrease in the illuminated surface of the moon

Wannimg

25

More than half but less than fully illuminated

gibbious

26

The illuminated surface is less than a quarter illuminated

Crescent moon

27

The entire surface of the moon is illuminated

Whole moon

28

The entire surface of the moon Is not illuminated

New moon

29

Half of the moons surfaces is illuminated

Quarter moon