Science Planets

Question 1

Solar System

Answer 1

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

Question 2

Galaxy

Answer 2

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

Question 3

Universe

Answer 3

Space and all of the energy and matter in it

Question 4

Satellite

Answer 4

An object that orbits a more massive object

Question 5

Impact crater

Answer 5

A round put left behind on the surface of a planet or other body in space after a smaller object strikes the surface

Question 6

Axis of Rotation

Answer 6

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

Question 7

Revolution

Answer 7

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

Question 8

Season

Answer 8

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

Question 9

Equinox

Answer 9

A time of the year when daylight and darkness and nearly equal for most of earth

Question 10

Solstice

Answer 10

The time of year when days are longest or shortest

Question 11

Mare

Answer 11

A large dark plain of solidified lava on the moon

Question 12

Eclipse

Answer 12

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

Question 13

Unbra

Answer 13

The dark central region of a shadow

Question 14

Penumbra

Answer 14

Lighter region of a shadow

Question 15

Astronomical unit

Answer 15

Earths average distance from the sun

Question 16

Ellipse

Answer 16

An oval or flattened circle

Question 17

Gas giant

Answer 17

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

Question 18

Terrestrial planet

Answer 18

Earth or a planet similar to earth with a rocky surface

Question 19

Asteroid

Answer 19

A small solid rocky body that orbits the sun

Question 20

Comet

Answer 20

A small icy body that orbits the sun

Question 21

Meteor

Answer 21

A brief streak of light produced by a small particle entering earths atmosphere

Question 22

Meteorite

Answer 22

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

Question 23

Geocentric

Answer 23

having or representing the earth as the center, as in former astronomical systems.

Question 24

Heliocentric

Answer 24

having or representing the sun as the center, as in the accepted astronomical model of the solar system.

Question 25

Gravity

Answer 25

The force that objects exert on each other because of their mass

Question 26

Tide

Answer 26

the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.

Question 27

Waxing

Answer 27

the moon at any time after new moon and before full moon, so called because its illuminated area is increasing. Compare waning moon

Question 28

Waning

Answer 28

The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the moon is more than half illuminated. Waxing essentially means "growing" or expanding in illumination, and waning means "shrinking" or decreasing in illumination.

Question 29

Gibbous moon

Answer 29

An easy way to remember and understand those "between" lunar phase names is by breaking out and defining 4 words: crescent, gibbous, waxing, and waning. The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the moon is more than half illuminated

Question 30

Crescent moon

Answer 30

between a half moon and a new moon, or between a new moon and a half moon. FULL MOON. A full moon appears as an entire circle in the sky. The full moon is given different names, depending on when it appears

Question 31

Full moon

Answer 31

the phase of the moon in which its whole disk is illuminated.

Question 32

New moon

Answer 32

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.

Question 33

Quarter moon

Answer 33

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. The moon is then said to wane as it passes through the gibbous moon, third-quarter moon, crescent moon and back to new moon.

Question 34

Orbit

Answer 34

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