KS3 Geography — Inside Earth — Full Worksheet

🌋 Build deep understanding of Earth's structure and tectonic plates with this complete, no-prep 100-mark worksheet — ready to use for lessons, homework, or revision. Earth is made up of four layers — the crust, mantle, outer core, and inner core — and movement in these layers drives tectonic plate activity, causing earthquakes and volcanoes, and this resource covers it in depth for KS3 students aged 11–14.

📦 What's included:

Structured across three sections of progressive difficulty:

Section 1 (30 marks) — the inner core temperature, liquid outer core, mantle thickness, lithosphere definition, Ring of Fire statistics, and the Kola borehole through multiple choice, a true/false table, and fill-in-the-blank covering iron and nickel, seismic waves, 93 elements, the 1% mantle flow figure, plate boundary, and Ring of Fire

Section 2 (40 marks) — a four-layer matching activity, a seismic wave explanation, a layers comparison table, the mantle misconception question, an inner vs outer core comparison, a Ring of Fire description with statistics, a plate boundary misconception correction, and a temperature gradient explanation

Section 3 (30 marks) — extended discussions on why we know so little about Earth's interior, comparing all four layers, and evaluating whether living near a plate boundary is always dangerous

Full answer key with detailed marking guidance included.

🎬 Watch the free video lesson: https://www.youtube.com/watch?v=BK6PqD-b3iI

👩‍🏫 Google Classroom ready — copy the link straight into your assignment. Print as many copies as your class needs.

🔓 Also available as part of the Complete Lesson Pack, bundled with extension activities. Save £1 buying the pack (£3 + £3 = £6 separately, £5 together).

Price: £3