Solar System

Question 1

Was once a planet. Now called a dwarf planet.

Answer 1

Pluto

Question 2

The 4th planet from the sun. Also called the “Red Planet.”

Answer 2

Mars

Question 3

A large body of rock or gases that orbits the sun.

Answer 3

planet

Question 4

The 1st planet in the solar system.

Answer 4

Mercury

Question 5

Spinning like a top, responsible for the Earth having day and night.

Answer 5

Earth’s rotation

Question 6

The farthest planet from the sun. Very dark and very cold.

Answer 6

Neptune

Question 7

A line–which you cannot see–that runs through the center of Earth from the North Pole to the South Pole.

Answer 7

axis

Question 8

The 3rd planet from the sun. (Our home)

Answer 8

Earth

Question 9

Someone who travels in a spacecraft.

Answer 9

astronaut

Question 10

The 2nd planet from the sun. Scientists think this planet may have had oceans, but it evaporated due to the sun’s heat.

Answer 10

Venus

Question 11

The movement of Earth once around the Sun, also called an orbit. The reason we have seasons. It takes 365 days to complete.

Answer 11

Earth’s revolution

Question 12

Is the star at the center of the Solar System.

Answer 12

Sun

Question 13

The 5th planet from the sun. Also the largest of the lanets.

Answer 13

Jupiter

Question 14

6th planet from the Sun and the second largest planet in the Solar System, after Jupiter.

Answer 14

Saturn

Question 15

The sun, the planets, and the other objects that orbit the sun.

Answer 15

solar system

Question 16

A group of stars that appear to form a picture.

Answer 16

constellation

Question 17

Areas of darkness caused by an object in the direct path of the sun. This changes as the sun appears to move through the sky each day.

Answer 17

shadow

Question 18

7th planet from the sun.

Answer 18

Uranus

Question 19

Stages of the moon’s cycle.

Answer 19

moon phases

Question 20

The only natural satellite of the Earth.

Answer 20

Moon