Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 84 · 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: letting the paper dry is a job for an adult. (a) True (b) False
2. 2.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is what we measure. (a) False (b) True
3. 3.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
4. 4.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice cube (c) a cork (d) a steel spoon
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a battery cell (c) a big bowl (d) a magnet
6. 6.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) the same ruler (b) where the pencil is (c) the kind of coins (d) which side goes down
7. 7.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a drinking straw (c) two chairs (d) a balloon
10. 10.📘 What is a hypothesis? (a) a list of materials (b) a kind of magnet (c) a final answer (d) a testable guess
11. 11.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a magnet (c) water (d) cling film
12. 12.True or false: a battery cell is not needed for the ruler lever. (a) False (b) True
13. 13.🧈 Why does shaking cream make butter? (a) the lid is warm (b) the jar adds butter (c) shaking adds salt (d) fat bits stick together
14. 14.True or false: yeast is not needed for the water cycle bowl. (a) True (b) False
15. 15.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? Which of these is what we measure? (a) the kind of paper (b) the same table (c) sheets it pulls through (d) the magnet used
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
17. 17.🏗️ Where does a bamboo pole get its strength from? (a) tubes (b) triangles (c) arches and domes
18. 18.True or false: a paper towel does not let water climb. (a) True (b) False
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
20. 20.True or false: washing hands afterwards is a safe habit. (a) True (b) False
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) the amount of salt (c) the same dish (d) days to see crystals
23. 23.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a tall clear glass (c) honey (d) yeast
24. 24.🍞 Why do we add sugar to the yeast? (a) to make it sweet (b) to colour it (c) it is food for yeast (d) to make it heavy
25. 25.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
26. 26.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
27. 27.🧲 Is a wooden pencil magnetic or non-magnetic? (a) non-magnetic (b) magnetic
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
29. 29.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a piece of foil
30. 30.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) yeast (c) a balloon (d) a clear glass of water
31. 31.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
32. 32.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) warmth (c) sugar (d) salt
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) a battery cell
34. 34.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🧺 Do we need test objects for the magnet test? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) turmeric powder (d) a results table
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
38. 38.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
39. 39.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
40. 40.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a balloon (d) a shallow dish

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