Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 672 · 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.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
2. 2.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
4. 4.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) sunlight (c) water (d) turmeric powder
5. 5.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
7. 7.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
8. 8.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
10. 10.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
12. 12.⚖️ 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) how many drops form (b) the size of the bowl (c) the amount of water (d) sun or shade
13. 13.True or false: sugar in warm water dissolves faster. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) turmeric powder (d) a sink or a bucket
15. 15.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) True (b) False
17. 17.⚖️ 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 the layers (b) the order of pouring (c) the same glass
18. 18.True or false: water a swimmer pushes goes forward. (a) True (b) False
19. 19.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a spoon (d) a battery cell
21. 21.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) no change at all (d) more friction, less far
22. 22.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a paper helicopter (c) an open sheet of paper (d) a feather
24. 24.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
25. 25.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
26. 26.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
27. 27.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
28. 28.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
29. 29.True or false: water is needed for the water cycle bowl. (a) False (b) True
30. 30.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the water turns red (c) fewer drops form (d) the bowl freezes
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) a towel for spills (d) a tub of water
32. 32.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) leave them wet (d) wipe them dry
33. 33.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the densest (d) it is the stickiest
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
35. 35.True or false: the balloon goes forward. (a) True (b) False
36. 36.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
37. 37.🛟 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
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a balloon rocket (d) a mirror
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a balloon (c) a long string (d) sticky tape

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