Science: The Solar System Worksheet

Question 1

What is the center of our solar system, and why is it important?

Accepted Answer

The Sun is the center of our solar system. It is important because its gravity holds the planets in orbit and it gives light and heat to the solar system.

Question 2

Name the eight planets in order from the Sun.

Accepted Answer

The eight planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Question 3

Which planet is known as the Red Planet, and what gives it that color?

Accepted Answer

Mars is known as the Red Planet. It looks red because its surface has iron-rich dust and rocks that rust.

Question 4

Explain the difference between a planet and a star.

Accepted Answer

A star makes its own light and heat, while a planet does not. A planet reflects light from a star and moves around it.

Question 5

What is an orbit?

Accepted Answer

An orbit is the path an object follows as it moves around another object in space because of gravity.

Question 6

Why does Earth have day and night?

Accepted Answer

Earth has day and night because it spins on its axis. The side facing the Sun has day, and the side turned away from the Sun has night.

Question 7

Which planet is the largest in the solar system?

Accepted Answer

Jupiter is the largest planet in the solar system.

Question 8

Describe one main feature of Saturn.

Accepted Answer

One main feature of Saturn is its large ring system made of ice, rock, and dust.

Question 9

What are asteroids, and where are many of them found?

Accepted Answer

Asteroids are small rocky objects that orbit the Sun. Many of them are found in the asteroid belt between Mars and Jupiter.

Question 10

What is the Moon, and how is it different from a planet?

Accepted Answer

The Moon is a natural satellite that orbits Earth. It is different from a planet because it orbits a planet instead of orbiting the Sun on its own path as a planet does.

Question 11

Why is Earth able to support life?

Accepted Answer

Earth is able to support life because it has liquid water, a suitable temperature range, and an atmosphere that protects living things and contains gases needed for life.

Question 12

What is a comet made of, and what can happen when it gets close to the Sun?

Accepted Answer

A comet is made of ice, dust, and rock. When it gets close to the Sun, the ice can heat up and form a glowing tail of gas and dust.

Question 13

Which planet do we live on, and where is it located in order from the Sun?

Accepted Answer

We live on Earth, which is the third planet from the Sun.

Question 14

Why do the outer planets take longer to go around the Sun than the inner planets?

Accepted Answer

The outer planets take longer to go around the Sun because they are farther away and have much larger orbits to travel.

Question 15

Compare an inner planet and an outer planet. Give one way they are different.

Accepted Answer

An inner planet is usually smaller and rocky, while an outer planet is usually larger and made mostly of gas or ice. For example, Earth is rocky, while Jupiter is a gas giant.

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Science: The Solar System

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