Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 21 · 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.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar in icy water (d) powdered sugar
2. 2.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
3. 3.🌈 In VIBGYOR, what number colour is blue?
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) yeast (d) cooking oil
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
7. 7.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
8. 8.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
9. 9.True or false: cooking oil is not needed for the density tower. (a) True (b) False
10. 10.True or false: a comb is not needed for the dissolving test. (a) True (b) False
11. 11.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
12. 12.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water can scald (d) hot water is magnetic
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) a sheet of white paper
14. 14.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) sunshine (c) rain (d) wind
15. 15.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
16. 16.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) True (b) False
18. 18.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) the rowing boat (d) water a swimmer pushes
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a magnet (d) a few hours of waiting
20. 20.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
21. 21.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
23. 23.📘 What does “dense” mean? (a) very thin (b) very hot (c) heavy for its size (d) very colourful
24. 24.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) sharp kitchen shears (d) gardening shears
25. 25.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
26. 26.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Do we need honey for the density tower? (a) not needed (b) needed
29. 29.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a glass marble (d) a plastic ruler
31. 31.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a towel for spills (d) a tub of water
35. 35.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) water from the oars (d) the balloon
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a balloon (c) two clear glasses (d) warm water
38. 38.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
40. 40.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) wipe them dry (c) leave them wet (d) pour more water

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