Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 66 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.True or false: turmeric powder is needed for the density tower. (a) False (b) True
2. 2.True or false: glucose powder does not dissolve in water. (a) True (b) False
3. 3.🛟 What should you do with leftover materials at the end? (a) hide them (b) leave them out (c) clean up safely (d) taste them
4. 4.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
5. 5.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
6. 6.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) melting butter (d) browning lemon ink
7. 7.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
8. 8.True or false: a cotton cloth is pulled by a magnet. (a) False (b) True
9. 9.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the same place (b) the number of seeds (c) how many seeds sprout (d) the same bowls
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
11. 11.True or false: soap solution is a base. (a) True (b) False
12. 12.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a sink or a bucket (d) a glass of water
15. 15.💧 Which of these is melting? (a) butter going runny (b) a pond icing over (c) drops under a pot lid (d) a misty bathroom mirror
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a balloon (d) a drinking straw
17. 17.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
18. 18.🔍 Which is the odd one out? (a) cutting the lemon (b) putting the iron away (c) dipping the cotton bud (d) ironing the paper
19. 19.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a mirror (c) chalk to mark shadows (d) a magnet
20. 20.🧲 Which metal do magnets pull most strongly? (a) aluminium (b) copper (c) iron (d) gold
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔬 How many steps are there in our scientific method (question to conclusion)?
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
28. 28.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it gets cold (d) when it turns blue
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) melting ice
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a clean glass (d) a battery cell
33. 33.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
34. 34.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
35. 35.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) turmeric powder (d) a mirror
36. 36.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) how far we pull it back (c) the weight of the bob (d) the string length
38. 38.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the time we wait
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False

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