Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 201 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) sawdust (d) chalk powder
2. 2.🔍 Which is the odd one out? (a) an iron nail (b) an ice-cream stick (c) a ball of clay (d) a steel spoon
3. 3.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
5. 5.💧 Which of these is freezing? (a) a pond icing over (b) wet hair drying (c) butter going runny (d) drops on a cold glass
6. 6.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a magnet
10. 10.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the slope of the string
12. 12.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) making ice lollies (d) butter going runny
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
14. 14.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) faster (c) slower (d) they never dry
15. 15.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) the same glass (c) how full the glass is
18. 18.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) powdered sugar (d) neither of them
19. 19.🥄 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) baking soda
20. 20.🌈 In VIBGYOR, what number colour is orange?
21. 21.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
22. 22.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) False (b) True
24. 24.🚀 Which of these goes backward? (a) gas from the rocket (b) the balloon (c) the swimmer (d) the rowing boat
25. 25.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
26. 26.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a pencil (c) turmeric powder (d) a strip of paper
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) the same card (c) how full the glass is (d) whether the card stays
28. 28.🌈 In VIBGYOR, what number colour is violet?
29. 29.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
30. 30.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
33. 33.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) sugar (d) cooking oil
34. 34.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) False (b) True
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
38. 38.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
40. 40.True or false: a bicycle pump works by magnetism. (a) True (b) False

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