The Greenhouse Effect - KS3 Biology Worksheet

A complete, no-prep 100-mark worksheet on the greenhouse effect — ready to use for lessons, homework, or revision with KS3 Biology students aged 11-14. 🌍

Greenhouse gases such as carbon dioxide and methane slow down heat escaping from Earth to space, keeping the planet warm enough for life. Human emissions are now making this natural warming stronger.

Structured across three sections of progressive difficulty: Section 1 (30 marks) covers key facts and vocabulary through five multiple-choice questions, a ten-statement true or false table and a ten-gap word bank summary. Section 2 (40 marks) builds understanding through key term definitions, an explanation of how greenhouse gases warm the surface, an emissions table, Mauna Loa carbon dioxide data analysis with calculations, and a question on how ice cores reveal past carbon dioxide levels. Section 3 (30 marks) challenges students with three extended tasks: a judgement question on whether Earth would be better off without greenhouse gases, an explanation of why we cannot open a window on Earth plus three ways to cut emissions, and a town council scenario involving a coal power station, car journeys and forest clearance. A full answer key with detailed marking guidance is included. Comes as a PDF and an editable Word file (DOCX).

🖥️ Full lesson page with the video, quiz and free worksheet: https://inewittall.com/ks3-biology/the-greenhouse-effect/?utm_source=payhip&utm_medium=listing ▶️ Watch the full lesson on YouTube: https://youtu.be/DgtyAFDpnAw

Also available: a companion extension pack with four enrichment activities, or save £1 with the complete lesson bundle.

TAGS: greenhouse effect, greenhouse gases, KS3 Biology, KS3 science, climate change, carbon dioxide, ice cores, enhanced greenhouse effect, fossil fuels, 100 marks, worksheet, assessment, homework, revision, answer key included

PRICE: £3

KEY STAGE: KS3

SUBJECT: Biology

FORMAT: PDF + DOCX (editable Word file)