Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 277 · 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: a comb is needed for the dissolving test. (a) False (b) True
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a balloon (c) a tall clear glass (d) cooking oil
3. 3.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) a wobbly chair (d) from your raised hand
4. 4.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
5. 5.🛟 Which of these sinks in water? (a) a metal key (b) a ping-pong ball (c) an empty capped bottle (d) a cork
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) whether it floats (c) the kind of clay (d) the shape of the clay
8. 8.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a magnet (c) a big bowl (d) a balloon
9. 9.🧺 Which of these is not needed for the density tower? (a) yeast (b) water with food colour (c) cooking oil (d) honey
10. 10.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a drinking straw
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
12. 12.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) a tall clear glass (d) a battery cell
13. 13.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) the water turns red (d) more drops form
14. 14.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.True or false: wet hair drying is melting. (a) True (b) False
17. 17.💧 Which change is this: butter going runny? (a) freezing (b) melting (c) condensation (d) evaporation
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
20. 20.True or false: a mirror is not needed for the density tower. (a) False (b) True
21. 21.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
22. 22.💧 Which change is this: wet hair drying? (a) evaporation (b) freezing (c) condensation (d) melting
23. 23.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
24. 24.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
25. 25.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
26. 26.True or false: a mirror is needed for the density tower. (a) True (b) False
27. 27.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a balloon (d) a mirror
28. 28.🔍 Which is the odd one out? (a) wet clothes drying (b) wet hair drying (c) a puddle drying up (d) making ice lollies
29. 29.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) escaping air pushes it (d) the string pulls it
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the shape of the clay (c) the kind of clay (d) whether it floats
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a glass of water (d) a balloon
32. 32.True or false: table salt does not dissolve in water. (a) True (b) False
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) sawdust (b) sand (c) cooking oil (d) table salt
35. 35.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a balloon
38. 38.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to stop the spinning (c) to weigh down the bottom (d) to make it magnetic

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