Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 376 · 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.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) rain (c) sunshine (d) lightning
2. 2.🔍 Which is the odd one out? (a) cooking oil (b) a ping-pong ball (c) air (d) a coin
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a long string (c) two chairs (d) a drinking straw
4. 4.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a fridge magnet
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) a tub of water (d) small test objects
6. 6.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the honey layer (c) in the water layer (d) under the honey
7. 7.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
8. 8.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) at the very bottom (c) in the oil layer (d) in the water layer
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same glass
11. 11.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a paper helicopter (b) a stone (c) a feather (d) an open sheet of paper
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a results table (c) a battery cell (d) a mirror
14. 14.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) cooking oil (c) honey (d) the spoon
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 measure it (b) we change it (c) we keep it the same
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
17. 17.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
18. 18.True or false: sugar does not dissolve in water. (a) False (b) True
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
20. 20.⚖️ 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 tub of water
21. 21.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
22. 22.🥄 Which of these dissolves in water? (a) glucose powder (b) cooking oil (c) chalk powder (d) sand
23. 23.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to salt (d) it turns to drops
24. 24.🛟 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
25. 25.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a steel spoon (d) a feather
26. 26.True or false: yeast is needed for the water rainbow. (a) False (b) True
27. 27.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) vinegar (c) two chairs (d) a balloon
28. 28.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) cooking oil (d) very salty water
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) air inside pushes back (d) the bottle is magnetic
33. 33.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.True or false: water a swimmer pushes goes forward. (a) True (b) False
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
36. 36.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
37. 37.True or false: a long string is needed for the balloon rocket. (a) True (b) False
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed

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