KS3 Science Worksheets: Free Printable Activities
There are 26 free KS3 science printables on this page, for Key Stage 3 (ages 11 to 14). Science sheets cover living things, materials, forces, light, sound, electricity and the Earth. Every sheet is made by Jaques of London: two A4 pages, with the activity on page 1 and notes for the grown-up on page 2.
What KS3 science covers
Key Stage 3 science covers biology, chemistry and physics, including cells, particles, forces, energy, chemical reactions and waves.
Year 7 KS3 science
12 free printables. All Year 7 worksheets
Body Systems BluffMatch each organ to its body system, or bluff.Answers
Breed a DragonFlip coins, build two baby dragons, then explain how DNA works.40 minAnswers
Cell Parts MatchJoin each cell part to its job.15 minAnswers
Echo Clap Speed TestUse speed = distance ÷ time. Show your working.35 minAnswers
Forces Code BreakerCrack four secret force words on the track.25 minAnswers
Lab Induction MissionLearn the kit, then spot the hazards and write a safety rule for each.30 minAnswers
Periodic Table StarterThe first twelve elements by atomic number.
Recipe for SugarComplete the leaf's recipe card, then predict what goes wrong when something is missing.40 minAnswers
Scrambled Lab KeywordsUnscramble each word, circle the letter asked for, then read the mystery word.35 minAnswers
Skeleton Knight QuizSix questions about bones and joints.15 minAnswers
Speed Distance TimeUse speed = distance divided by time.Answers
States of Matter ParticlesFill the gaps then draw the particles.15 minAnswers
Year 8 KS3 science
6 free printables. All Year 8 worksheets
Electromagnet InvestigationDoes more turns of wire mean a stronger magnet?.Answers
Element or Compound LabSort boxes A to P: E element, C compound, M mixture.35 minAnswers
Metals and Reactivity SeriesPut the metals in order of how reactive they are.Answers
Periodic Table GroupsUnscramble six elements and find their group.20 minAnswers
Plant Cell Colour CodeName each part, then colour the grid by code to reveal the cell.35 minAnswers
Word Equations PracticeComplete the missing product or reactant.Answers
Year 9 KS3 science
8 free printables. All Year 9 worksheets
Careers in Science CardsTen science jobs and one route into each.
DNA Word UnzipUnscramble each word. Then read the first letters of words 1 to 6.15 minAnswers
Ohm's Law QuestionsUse V = I × R.Answers
Punnett Square PracticeWork out the chance of an inherited trait.Answers
Ruler Drop Reaction TestStudy the results, then complete the lab report.35 minAnswers
Scientific Method PlannerPlan a fair test with variables.Answers
The Atom Crime LabClassify the six clues, then use the letters to name the culprit.30 minAnswers
Wave Mystery Trading CardsRead each card, name the wave, then rank them from longest to shortest wavelength.30 minAnswers
Questions parents and teachers ask
What does KS3 science cover?
Key Stage 3 science covers biology, chemistry and physics, including cells, particles, forces, energy, chemical reactions and waves.
Are these KS3 science printables free?
Yes. All 26 are free to print for home, classroom and home education use.
Which year groups are they for?
They cover Year 7, Year 8 and Year 9.
Do the sheets include answers?
Answers are included on 24 of the 26 sheets. The rest are open tasks, and page 2 explains what a good answer looks like.
How long does each sheet take?
Most take 15 to 40 minutes. Each sheet is two A4 pages. Page 1 is the activity and page 2 has notes for the grown-up.
Can teachers use them in class?
Yes. They work as starters, plenaries, early finisher tasks, homework or table activities, and need no preparation beyond printing.
Do I need a colour printer?
No. Black and white printing is fine for almost every sheet.
Last updated 2026-11-10. Written by the Mini Minds Hub team at Jaques of London.