Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 479 · 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) a ping-pong ball (b) a pebble (c) cooking oil (d) an ice cube
2. 2.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
3. 3.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
6. 6.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
7. 7.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the amount of water (d) the kind of sugar
9. 9.True or false: a magnet is needed for the water cycle bowl. (a) True (b) False
10. 10.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) neither of them (d) the crumpled ball
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
13. 13.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil makes it rain (d) oil attracts magnets
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the length of the blades (c) the drop height (d) the person dropping
15. 15.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) bright sunlight (d) a clear glass of water
18. 18.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
19. 19.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) ice becoming water (b) wet hair drying (c) snow turning to water (d) butter going runny
21. 21.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a fridge magnet (d) a sundial
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) the cling film cover (c) sun or shade (d) how many drops form
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same string (c) how big we blow it
24. 24.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) turmeric powder (d) yeast
25. 25.True or false: an empty capped bottle sinks in water. (a) False (b) True
26. 26.💧 Which change is this: wet clothes drying? (a) evaporation (b) condensation (c) melting (d) freezing
27. 27.True or false: sugar is not needed for the dissolving test. (a) False (b) True
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) False (b) True
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a towel (d) a magnet
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same glass (b) the order of pouring (c) the order of the layers
32. 32.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
33. 33.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it flies off the string (d) it turns into a kite
34. 34.True or false: honey is not needed for the dissolving test. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) air (b) cooking oil (c) a cork (d) honey
36. 36.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
40. 40.True or false: warm water is not needed for the dissolving test. (a) False (b) True

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