Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 344 · 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.⚖️ 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 “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) a clear glass of water (d) bright sunlight
3. 3.True or false: a paper helicopter falls slowly through the air. (a) True (b) False
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is hot (c) oil is heavier (d) oil is sticky
6. 6.⚖️ 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 what we measure. (a) True (b) False
7. 7.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil turns into honey (d) oil makes it rain
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) how big we blow it (c) the same tape (d) the same straw
9. 9.🌈 In VIBGYOR, what number colour is yellow?
10. 10.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the coldest (d) it is the densest
11. 11.🔍 Which is the odd one out? (a) a fluff of cotton (b) an open sheet of paper (c) a feather (d) a glass marble
12. 12.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
13. 13.🧺 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 stiff postcard (c) a magnet (d) a glass of water
14. 14.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
15. 15.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) particles move faster (d) cold water is wet
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a pencil (c) safety scissors (d) a ruler
19. 19.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a high window ledge (c) a roof edge (d) a wobbly chair
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) cling film (c) ice cubes (d) sunlight
22. 22.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
24. 24.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
25. 25.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
26. 26.🌈 In VIBGYOR, what number colour is indigo?
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) a mirror (d) two clear glasses
28. 28.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) the kind of clay (d) the amount of clay
30. 30.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a strip of cloth (d) a glass marble
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.True or false: sawdust does not dissolve in water. (a) False (b) True
33. 33.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) bright sunlight
35. 35.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) it turns to salt (d) some water evaporates
36. 36.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
37. 37.🔍 Which is the odd one out? (a) honey (b) a coin (c) a glass marble (d) cooking oil
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a cotton thread (d) a piece of chalk
39. 39.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
40. 40.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed

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