Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 682 · 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.⚖️ 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 order of pouring (b) the order of the layers (c) the same glass
2. 2.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a battery cell (c) a magnet (d) small test objects
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the same white paper (c) the amount of water (d) the same window
6. 6.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
7. 7.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
8. 8.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a toy parachute (c) a steel spoon (d) a coin
9. 9.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a paper towel
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a balloon (c) cling film (d) a small cup
11. 11.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a tub of water (d) a results table
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a battery cell (d) a white flower
18. 18.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
20. 20.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
21. 21.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) a glass marble (d) cooking oil
22. 22.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a long string (c) a drinking straw (d) two chairs
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
24. 24.⚖️ 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) False (b) True
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a high window ledge (c) a roof edge (d) from your raised hand
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
29. 29.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the cling film (c) water warmed by the Sun (d) the bowl itself
30. 30.True or false: a magnet is needed for the water rainbow. (a) True (b) False
31. 31.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
32. 32.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they separate again (c) they become solid (d) they mix for ever
33. 33.⚖️ 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) the size of the bowl (b) sun or shade (c) how many drops form (d) the cling film cover
34. 34.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) vinegar (d) a drinking straw
38. 38.🍯 Which of these is less dense than water? (a) air (b) a pebble (c) honey (d) a coin
39. 39.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed

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