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Solar System 01

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The largest planet in our solar system is Jupiter.

Solar System 01

The Solar System is full of planets, moons, and mysteries. From giant gas planets to rocky worlds, it shows how diverse our universe really is.

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Fascinating Fact:

Jupiter has a storm called the Great Red Spot that has been raging for over 300 years.

In KS3 Science, pupils study the Solar System, including planets, moons, asteroids, and comets. They also learn how gravity holds it all together and how orbits work.

  • Orbit: The path an object takes as it moves around a star, planet, or moon.
  • Asteroid: A small rocky body that orbits the Sun, mostly found in the asteroid belt.
  • Gravity: The force that pulls objects toward one another, keeping planets in orbit around the Sun.
What is the Solar System in KS3 Science?

The Solar System is made up of the Sun, eight planets, moons, asteroids, and comets, all held together by the force of gravity.

Which planet is known as the Red Planet?

Mars is called the Red Planet because of its iron-rich soil, which gives it a reddish colour when seen from Earth.

What keeps planets orbiting the Sun?

Gravity keeps planets in orbit around the Sun. The pull of the Sun’s gravity balances with the forward motion of each planet.

1 .
How many planets are there in our solar system?
7
8
10
11
Some scientists think that Pluto is a planet, however it was reclassified as a dwarf planet in 2005
2 .
Which is the largest planet in our solar system?
Earth
Jupiter
Saturn
Uranus
More than 1,300 Earths could fit inside it!
3 .
Which was the first planet known to have rings?
Jupiter
Pluto
Saturn
Uranus
The particles that make up Saturn’s rings range in size from smaller than a grain of sand to as large as a mountain
4 .
How many stars are there in our galaxy?
Hundreds
Millions
Thousands
Billions
They are held in place by gravity and the whole galaxy is slowly rotating because the stars are all orbiting the centre of mass. It takes the Sun about 220 million years to complete one orbit
5 .
A satellite is .......
a large object in orbit round a smaller object
a large object in space
a small object in orbit round a larger object
a small object in space
The Moon is a satellite of the Earth
6 .
We can sometimes see some of the planets because .......
they are a source of light
they are luminous
they reflect light from the Moon
they reflect light from the Sun
They are sometimes out of sight because they are between the Earth and the Sun or on the opposite side of the Sun to Earth
7 .
What is our solar system a part of?
Constellation
Orion
Mars
Milky Way
The Milky Way is the name given to the galaxy of stars in which the Sun is situated. There are many other galaxies in the universe, some contain more stars than ours and some are smaller
8 .
Which one do artificial satellites NOT do?
Collect information
Remain stationary
Send TV broadcasts
Take photographs
They have to keep moving otherwise they would simply fall back down towards the surface of the Earth and burn up like a meteor as they entered the atmosphere
9 .
The time it takes the Earth to orbit the Sun is called .......
28 days
a month
a year
10 years
An orbit round the Sun is a path round the Sun
10 .
The centre of our solar system is .......
Mars
the Earth
the Moon
the Sun
The temperature on the surface of the Sun is about 5,500°C
You can find more about this topic by visiting BBC Bitesize – Features of our solar system

Author:  Sue Davison (Chemistry Specialist & KS3 Science Teacher, Quiz Writer)

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