Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 114 · 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.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
2. 2.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a magnet (c) yeast (d) fresh cream
3. 3.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
5. 5.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a magnet (c) a balloon (d) yeast
7. 7.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) on top of the oil (d) in the water layer
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) the same string (d) distance it travels
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
10. 10.📘 What is a hypothesis? (a) a kind of magnet (b) a final answer (c) a testable guess (d) a list of materials
11. 11.📘 What is yeast? (a) a kind of salt (b) a kind of sugar (c) a kind of stone (d) a tiny living fungus
12. 12.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) sand
13. 13.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
14. 14.True or false: seeds in the freezer does not sprout. (a) True (b) False
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
16. 16.True or false: detergent water is a base. (a) False (b) True
17. 17.🌈 In VIBGYOR, what number colour is violet?
18. 18.⚖️ 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 kind of coins (b) the same ruler (c) which side goes down (d) distance from the pencil
19. 19.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) tiny paper bits (b) a balloon (c) a battery cell (d) a plastic comb
20. 20.🌱 Which of these is not needed for a seed to sprout? (a) air (b) water (c) warmth (d) soil
21. 21.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) gas from the rocket (d) water a swimmer pushes
22. 22.🍯 Which of these is denser than water? (a) a pebble (b) air (c) cooking oil (d) a cork
23. 23.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) a straight stick (d) a sunny open place
25. 25.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
27. 27.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
28. 28.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
29. 29.⚖️ A child tests plants with and without water, but puts one in the sun and one in a cupboard. Is it a fair test? (a) yes, it is fair (b) no, two things changed (c) only on Sundays (d) yes, if done fast
30. 30.⚖️ Why do we change only one thing in a fair test? (a) to use less paper (b) to make it fun (c) to finish faster (d) to know what caused it
31. 31.True or false: water is needed for the turmeric test. (a) True (b) False
32. 32.🧲 Which of these pull together? (a) north near north (b) south near south (c) north near south
33. 33.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it sank as sand (d) it spread in the water
34. 34.🪴 Which of these is a job of the leaves? (a) carry water upward (b) make seeds (c) hold the plant in soil (d) give out water vapour
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the light we look in
36. 36.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
37. 37.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the static comb? (a) a balloon (b) a plastic comb (c) turmeric powder (d) dry hair
39. 39.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
40. 40.🧈 Which of these is a change that can be undone? (a) melting butter (b) baking a cake (c) browning lemon ink (d) rusting iron

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