Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 25 · 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.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) the same three liquids (c) how much of each liquid (d) the order of the layers
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
3. 3.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) aim it at your friend (d) keep it away from faces
4. 4.🍞 Which of these is something yeast does not need? (a) sunlight (b) warm water (c) time (d) sugar
5. 5.🥄 Which of these dissolves in water? (a) table salt (b) sawdust (c) sand (d) cooking oil
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a cap or hat (d) a woollen sweater
7. 7.🧂 Which of these dissolves in water? (a) sugar (b) sand (c) sawdust (d) chalk powder
8. 8.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a battery cell (c) a 30 cm ruler (d) a flat table
9. 9.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is the one thing we change. (a) True (b) False
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
11. 11.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is kept the same. (a) False (b) True
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the kind of plant (c) the size of the plant (d) sun or shade
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) sugar (d) sand
15. 15.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? Which of these is the one thing we change? (a) the same paper clip (b) the kind of paper (c) the magnet used (d) sheets it pulls through
16. 16.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
17. 17.🛟 Static from a comb is safe. Which electricity must children never play with? (a) a rubbed balloon (b) plug points at home (c) a rubbed plastic comb (d) paper bits on a comb
18. 18.🍞 Why does yeast work slowly in cold water? (a) cold water is heavy (b) cold makes it pink (c) cold kills sugar (d) cold slows yeast down
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) coins as the load (c) an empty thread reel (d) a pencil
20. 20.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “distance from the pencil”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need a flat table for the ruler lever? (a) not needed (b) needed
23. 23.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) the same hair (b) paper bits picked up (c) the same comb (d) number of rubs
24. 24.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
25. 25.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
26. 26.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? Which of these is kept the same? (a) the magnet used (b) the kind of paper (c) sheets it pulls through
27. 27.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
28. 28.🔍 Which is the odd one out? (a) reading the steps first (b) touching a hot iron (c) wiping up spills at once (d) asking an adult first
29. 29.True or false: a battery cell is needed for the magnet test. (a) False (b) True
30. 30.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
31. 31.True or false: the rowing boat goes forward. (a) False (b) True
32. 32.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
33. 33.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a flower stem (d) a rubber eraser
34. 34.🍞 Which of these is something yeast does not need? (a) time (b) a magnet (c) warm water (d) sugar
35. 35.True or false: freezing water is a change that cannot be undone. (a) False (b) True
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a battery cell (d) a towel
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) warm water (c) a teaspoon (d) a comb
38. 38.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
39. 39.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) white paper (c) lemon juice (d) a balloon
40. 40.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) yeast (d) a paper clip

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