Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 282 · 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 is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) a magnet (d) a tub of water
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a strip of paper (c) a pencil (d) a ruler
3. 3.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it falls upward (c) it does not fall (d) it turns blue
4. 4.🔮 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) the crumpled ball (d) neither of them
5. 5.⚖️ 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 the one thing we change. (a) True (b) False
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a towel
7. 7.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) True (b) False
9. 9.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) air from the balloon (d) the rocket
10. 10.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) yeast (c) a strip of paper (d) a magnet
12. 12.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
13. 13.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
14. 14.🔍 Which is the odd one out? (a) a fluff of cotton (b) an open sheet of paper (c) a toy parachute (d) a stone
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) yeast
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
17. 17.🛟 Which of these floats on water? (a) a pebble (b) a ping-pong ball (c) a ball of clay (d) a coin
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) a towel for spills (d) small test objects
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a steel spoon
22. 22.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) safety scissors (c) a paper clip (d) yeast
23. 23.💧 In the covered bowl, where does the water vapour come from? (a) water warmed by the Sun (b) the bowl itself (c) the air outside (d) the cling film
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
25. 25.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
26. 26.True or false: a balloon is needed for the paper helicopter. (a) True (b) False
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: a paper towel does not let water climb. (a) False (b) True
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub
31. 31.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: table salt does not dissolve in water. (a) True (b) False
33. 33.True or false: honey is not needed for the density tower. (a) False (b) True
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a long string (d) a battery cell
35. 35.⚖️ 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 same glass (b) the order of the layers (c) the same three liquids (d) the order of pouring
36. 36.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
37. 37.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
38. 38.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
40. 40.True or false: cooking oil is denser than water. (a) True (b) False

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