Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 453 · 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 mirror is needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
5. 5.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
6. 6.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.True or false: sunlight is needed for the water cycle bowl. (a) False (b) True
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a mirror (d) a results table
9. 9.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) yeast (c) a ruler (d) a magnet
10. 10.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to smoke (c) it turns to drops (d) it disappears
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the slope of the string
12. 12.🛟 Which of these sinks in water? (a) a dry leaf (b) an iron nail (c) a ping-pong ball (d) an empty capped bottle
13. 13.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a mirror (c) a magnet (d) safety scissors
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a tub of water (c) a results table (d) a towel for spills
15. 15.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) the same three liquids (c) how much of each liquid (d) the order of the layers
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sunny window (d) a sheet of white paper
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same white paper (c) the same window (d) the time of day
20. 20.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
21. 21.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
23. 23.True or false: sugar in warm water dissolves slower. (a) False (b) True
24. 24.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) the balloon (d) gas from the rocket
25. 25.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a mirror (c) a strip of paper (d) turmeric powder
27. 27.True or false: a steel spoon floats on water. (a) False (b) True
28. 28.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) vinegar (c) sticky tape (d) a balloon
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a balloon (c) a towel (d) a glass of water
31. 31.⚖️ 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) sun or shade (b) the size of the bowl (c) the time we wait (d) the cling film cover
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a towel (d) a glass of water
33. 33.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
34. 34.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a clock or timer (c) a teaspoon (d) a comb
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a solution (d) a magnet
40. 40.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats

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