Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 531 · 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.True or false: water with food colour is needed for the density tower. (a) True (b) False
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🧺 Which of these is needed for the paper helicopter? (a) a paper clip (b) turmeric powder (c) a magnet (d) a balloon
4. 4.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) cooking oil (c) coloured water (d) the spoon
5. 5.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a feather (c) a ping-pong ball (d) a steel spoon
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🧺 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 magnet (d) a glass of water
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) False (b) True
10. 10.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it dissolves (d) it sinks faster
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it spins the other way (c) it falls upward (d) it turns blue
14. 14.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) honey (d) a cork
15. 15.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) drops under a pot lid (c) dew on morning grass (d) sweat drying on skin
16. 16.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
17. 17.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) sun or shade (c) the size of the bowl (d) the time we wait
19. 19.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) two chairs (d) vinegar
20. 20.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
21. 21.True or false: an ice cube sinks in water. (a) False (b) True
22. 22.True or false: honey is not needed for the density tower. (a) False (b) True
23. 23.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
24. 24.True or false: a battery cell is needed for the water cycle bowl. (a) True (b) False
25. 25.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
26. 26.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) two clear glasses (d) a teaspoon
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a balloon (c) sugar (d) two clear glasses
29. 29.True or false: a mirror is not needed for the water cycle bowl. (a) False (b) True
30. 30.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) under the ground (d) in front of you
31. 31.True or false: a steel spoon floats on water. (a) True (b) False
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a mirror (c) safety scissors (d) a strip of paper
33. 33.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) water is heavier (d) it looks nicer
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
38. 38.⚖️ 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 pouring is what we measure. (a) True (b) False
39. 39.True or false: butter going runny is condensation. (a) True (b) False
40. 40.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet

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