Space: Gravity, Seasons and the Solar System — Interactive Lesson (Ages 11–14)

Why would you weigh less on the Moon, and why do we have seasons? This 18-slide interactive lesson on mass and weight takes pupils from first ideas to exam-style explanations, with 10 self-marking activities and nothing to prepare beforehand.

Teaching Space: Gravity, Seasons and the Solar System in KS3 Science

Pupils tell mass from weight and calculate weight with weight = mass × gravitational field strength on Earth and the Moon. They explain day, night and years, show why the tilt of the Earth's axis causes seasons and why equatorial countries have wet and dry seasons instead, and describe the Solar System, the Milky Way and light years.

What Pupils Will Learn

• Tell the difference between mass and weight.
• Calculate weight using weight = mass × gravitational field strength.
• Explain day, night and years.
• Explain why we have seasons.
• Describe the Solar System, galaxies and light years.

What’s Included

• 18-slide interactive lesson
• 10 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks, drag-and-drop categorising and fill-in-the-gap questions
• Step-by-step teaching cards that reveal one point at a time
• A written explanation task with a model answer for self-assessment

Why Teachers Love It

• No prep — open it on an interactive whiteboard, laptop or tablet
• Instant feedback explains every answer, right or wrong
• Everyday examples make physics feel real
• Works for whole-class teaching, independent study or revision

Curriculum Alignment

Supports the UK Key Stage 3 Science curriculum and Nigerian Junior Secondary Basic Science (JSS3), building the foundations pupils need for GCSE, WAEC and NECO.

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FAQ

What year groups is this for? Year 9 (ages 11–14), and JSS3 in Nigeria.

Is it self-marking? Yes — all 10 activities give instant feedback.

Do pupils need to log in? No. The lesson runs in any modern web browser.

Can I use it for revision? Yes. Pupils can replay it as often as they like, and the results screen shows which questions to review before a test.