Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 528 · 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 drinking straw is not needed for the balloon rocket. (a) False (b) True
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
5. 5.💧 Which of these is evaporation? (a) drops on a cold glass (b) butter going runny (c) wet clothes drying (d) drops under a pot lid
6. 6.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
7. 7.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
8. 8.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a roof edge (c) a high window ledge (d) from your raised hand
9. 9.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
10. 10.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a balloon (c) a battery cell (d) a ruler
11. 11.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
12. 12.🍯 Which of these is denser than water? (a) air (b) a ping-pong ball (c) a cork (d) a coin
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
14. 14.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) water with food colour (d) turmeric powder
15. 15.⚖️ 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 cling film cover (b) sun or shade (c) the time we wait (d) how many drops form
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a spoon (d) yeast
18. 18.🧺 Which of these is needed for the water cycle bowl? (a) a big bowl (b) a balloon (c) a mirror (d) a battery cell
19. 19.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) distance it travels (c) the slope of the string (d) how big we blow it
21. 21.⚖️ 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 order of the layers”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) a balloon (d) a clock or timer
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.True or false: a sugar cube lets water climb up it. (a) False (b) True
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the length of the blades (c) the kind of paper (d) the drop height
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the kind of clay
27. 27.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) faster (c) they never dry (d) slower
28. 28.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the size of the bowl (c) sun or shade
31. 31.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
32. 32.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) safety scissors (c) yeast (d) a magnet
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of water
34. 34.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
37. 37.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it became air (d) it vanished for ever
38. 38.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) yeast (c) a magnet (d) a clear glass of water
40. 40.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward

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