Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 24 · 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.🧺 Which of these is needed for the density tower? (a) a mirror (b) a battery cell (c) a magnet (d) a tall clear glass
2. 2.True or false: plain water is neutral. (a) False (b) True
3. 3.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
4. 4.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.True or false: asking an adult first is a safe habit. (a) False (b) True
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) the left side (b) the right side (c) both go up (d) neither, it balances
9. 9.🧲 Is a rubber eraser magnetic or non-magnetic? (a) non-magnetic (b) magnetic
10. 10.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) sawdust
11. 11.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) turmeric powder (d) a magnet
13. 13.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) turmeric powder (d) a magnet
14. 14.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
16. 16.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
17. 17.❓ Which question can be tested by an experiment? (a) which colour is nicest? (b) who is the best friend? (c) do magnets pull iron? (d) is music beautiful?
18. 18.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a ruler (c) a battery cell (d) a strip of paper
20. 20.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a rubber band (c) a potted plant (d) sunlight
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
22. 22.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
23. 23.True or false: a magnet is not needed for the fizzy balloon. (a) True (b) False
24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a mirror
26. 26.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
28. 28.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
29. 29.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) green (d) blue
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
32. 32.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a tray for spills (c) sugar (d) an empty bottle
33. 33.🧭 Which tool uses a magnet to find directions? (a) a periscope (b) a sundial (c) a pulley (d) a compass
34. 34.🌱 What comes out of a moong seed first when it sprouts? (a) a flower (b) a thorn (c) a fruit (d) a tiny root
35. 35.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a magnet (d) a ruler
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a balloon (d) water
40. 40.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley

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