Planet Vocab

Question 1

Space and all the matter and energy in it

Answer 1

Universe

Question 2

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

Answer 2

Meteorite

Question 3

Half of the moon is illuminated

Answer 3

Quarter moon

Question 4

The entire surface of the moon is not illuminated

Answer 4

New moon

Question 5

Average distance from the sun which is 93,000,000 miles

Answer 5

Astronomical units

Question 6

The motion of one body around another such as the Earth in its orbit around the sun

Answer 6

Revolution

Question 7

The illuminated surface is less than a quarter illuminated

Answer 7

Crescent moon

Question 8

A region of lighter shadow that may surround a central

Answer 8

Penumbra

Question 9

A large dark plain of solidified lava on the moon

Answer 9

Mare

Question 10

Millions and billions of stars held together in a group by their own gravity

Answer 10

Galaxy

Question 11

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

Answer 11

Comet

Question 12

An event during which one object in space casts a shadow onto another

Answer 12

Eclipse

Question 13

More than half but less than fully illuminated

Answer 13

Gibbous moon

Question 14

The path of an object in space as it moves around another object due to gravity

Answer 14

Orbit

Question 15

A sun centered theory of the universe

Answer 15

Heliocentric theory

Question 16

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

Answer 16

Tide

Question 17

The gradual decrease in the illuminated surface of the moon

Answer 17

Waning

Question 18

Earth centered theory of the solar system

Answer 18

Geocentric theory

Question 19

An oval or flattened circle

Answer 19

Ellipse

Question 20

One of a pattern of temperature changes and other weather trends over the course of the year

Answer 20

Season

Question 21

The force that objects exert on one another because of their mass

Answer 21

Gravity

Question 22

A round pit left behind on the surface of a planet after a small object strikes the surface

Answer 22

Impact crater

Question 23

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

Answer 23

Solar system

Question 24

A large planet that consists mostly of gases in a dense form

Answer 24

Gas giant

Question 25

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

Answer 25

Equinox

Question 26

A small solid rocky body that orbits the sun

Answer 26

Asteroid

Question 27

A region of lighter shadow that may surround a dark central region

Answer 27

Penumbra

Question 28

In an orbit, a position and time during which one hemisphere receives the maximum sunlight

Answer 28

Solstice

Question 29

An object that orbits a more massive object

Answer 29

Satellite

Question 30

The gradual increase of the illuminated surface of the moon

Answer 30

Waxing

Question 31

Half of the moon is illuminated

Answer 31

Crescent moon

Question 32

A brief streak of light produced by a particle entering Earths atmosphere at high speed

Answer 32

Meteor

Question 33

A planet that has a rocky surface

Answer 33

Terrestrial planet

Question 34

An imaginary line about which a turning body such as Earths rotates

Answer 34

Axis of Rotation

Question 35

A brief streak of light produced by a particle entering Earths atmosphere at high speed

Answer 35

Meteor

Question 36

A planet that has a rocky surface

Answer 36

Terrestrial planet

Question 37

An imaginary line about which a turning body such as Earths rotates

Answer 37

Axis of Rotation