New
New
Year 7

Our solar system

I can describe our solar system, including ideas about the locations, movements, sizes and distances of the different objects within our solar system.

New
New
Year 7

Our solar system

I can describe our solar system, including ideas about the locations, movements, sizes and distances of the different objects within our solar system.

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Lesson details

Key learning points

  1. A star is an extremely large sphere of hot gas that gives out light.
  2. A planet is a very large sphere of rock or gas that orbits a star.
  3. Our solar system includes the Sun (a star) and all the objects that orbit the Sun.
  4. Orbiting the Sun are: 8 planets (many of which have moons), dwarf planets and smaller objects such as asteroids.
  5. Distances between objects in our solar system are very, very large compared to the sizes of the objects.

Keywords

  • Star - A star is an extremely large sphere of hot gas that emits light.

  • Planet - A planet is a very large sphere of rock or gas that orbits a star.

  • Dwarf planet - A dwarf planet is a large, round object that orbits a star but is not big enough to clear its orbital path of other debris.

  • Asteroid - An asteroid is a small, rocky object that orbits the Sun.

  • Solar system - Our solar system includes the Sun and all the objects in orbit around the Sun.

Common misconception

Stars and the planets in our solar system are intermingled, with stars between the planets.

Make it clear with diagrams, scaled examples and/or videos (freely available online) that 'zoom out' from Earth, that the second nearest star to Earth is 10 000 times further away from the Sun than Neptune, the most distant planet.

There are numerous high-quality videos online that really help pupils develop a sense of the scale of our solar system. Some show a 'zooming out' sequence from Earth, others show the construction of a complete scale model. There are excellent online solar system simulations freely available too.
Teacher tip

Equipment

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Which of these objects in the solar system is a planet?
Callisto
Europa
Ganymede
Io
Correct answer: Jupiter
Q2.
Put these planets in order of increasing distance from the Sun, starting with the closest one.
1 - Mercury
2 - Venus
3 - Earth
4 - Mars
5 - Jupiter
Q3.
Put these planets in order of increasing size, starting with the smallest.
1 - Mercury
2 - Earth
3 - Jupiter
Q4.
Which of these statements is correct about Earth?
Correct answer: Earth is a spherical, rocky planet.
Earth is a flat, gaseous planet.
Earth is a spherical, gaseous planet.
Earth is a flat, rocky planet.
Q5.
Which of these objects are not found in our solar system?
asteroids
Correct answer: black holes
moons
planets
Q6.
Which of these planets does not have any moons?
Earth
Jupiter
Correct answer: Mercury
Saturn

6 Questions

Q1.
Which of these statements about planets is incorrect?
Planets orbit a star.
Planets are spherical.
Correct answer: Planets give out their own light.
Planets are usually much smaller than stars.
Q2.
Which of these objects is not found in our solar system?
asteroids
dwarf planets
moons
Correct answer: nebulae
planets
Q3.
Which of the planets listed is small and rocky?
Correct answer: Mars
Jupiter
Saturn
Uranus
Neptune
Q4.
Between which two planets is the asteroid belt found?
An image in a quiz
Mercury and Venus
Earth and Mars
Correct answer: Mars and Jupiter
Saturn and Uranus
Q5.
If a scale model was made of our solar system, and the Sun was represented by a tennis ball, what size would the planets be?
Correct answer: smaller than an apple pip
about the same size as a golf ball
larger than a grapefruit
larger than a football
Q6.
Lucas has drawn this diagram of the solar system, but has made some mistakes. Which of the statements below identify the parts that Lucas has drawn correctly?
An image in a quiz
Correct answer: the order of the planets
the sizes of the planets compared to the Sun
the positions of the planets in their orbits
the relative distances of the planets from the Sun