An introduction to the Sun and the Solar System. It explains that the Sun is a medium sized star, describes its layers from the core to the chromosphere, and then moves out through the planets that make up our neighbourhood in space.
What this presentation covers
- The Sun as a star
- the layers of the Sun
- the planets
- our place in the Solar System
Level: KS2 / KS3
Slides: 18
Format: PowerPoint (.pptx)
Teaching notes
How to use it. Suits KS2 Earth and space and KS3 space physics. Start by asking pupils whether the Sun is big or small compared with other stars; most are surprised that it is only medium sized. A labelled cut away drawing of the Sun’s layers makes a good plenary, and there is a clear safety point to make: never look directly at the Sun.
Key words
- Star: a huge ball of hot gas that releases energy by nuclear fusion
- Core: the centre of the Sun, where hydrogen fuses into helium
- Photosphere: the visible surface of the Sun
- Chromosphere: the thin layer of gas above the photosphere
- Nuclear fusion: small nuclei joining to make larger ones, releasing energy
Common misconception: “The Sun is on fire, like a giant bonfire.” Nothing is burning. The Sun’s energy comes from nuclear fusion in its core, where hydrogen nuclei join to make helium.
Quick check questions
- What type of object is the Sun?
- Where in the Sun does nuclear fusion take place?
- Why should you never look directly at the Sun?
Show answers
- A medium sized star.
- In the core.
- Its light is strong enough to permanently damage your eyes.
Related lessons: Stars and the HR Diagram | Planets and Orbits | Cosmic Rays and Solar Flares
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