Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 556 · 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.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
2. 2.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
3. 3.True or false: a pencil is not needed for the paper helicopter. (a) False (b) True
4. 4.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar stirred well (d) sugar left unstirred
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a mirror (d) a magnet
6. 6.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a balloon (c) water (d) a big bowl
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) bright sunlight
9. 9.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) food colour (d) table salt
13. 13.🔍 Which is the odd one out? (a) honey (b) a pebble (c) a cork (d) very salty water
14. 14.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
16. 16.True or false: a mirror is not needed for the density tower. (a) False (b) True
17. 17.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a balloon (d) a teaspoon
20. 20.⚖️ 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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
22. 22.True or false: wet hair drying is condensation. (a) True (b) False
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
24. 24.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a clear glass of water (d) a balloon
25. 25.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a paper towel (d) a rubber eraser
26. 26.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a white flower (d) food colour
30. 30.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
31. 31.True or false: a feather falls fast through the air. (a) False (b) True
32. 32.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to drops (c) it turns to smoke (d) it turns to salt
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
34. 34.True or false: sugar in icy water dissolves faster. (a) True (b) False
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a battery cell (d) yeast
36. 36.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
38. 38.🛟 Which of these floats on water? (a) a coin (b) a steel spoon (c) an ice-cream stick (d) an iron nail
39. 39.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
40. 40.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air

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