Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 612 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it gets hot (d) so it turns blue
2. 2.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a piece of chalk (d) a paper towel
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) hot water can scald (d) it changes colour
5. 5.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
6. 6.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
8. 8.⚖️ 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 order of the layers (b) the order of pouring (c) the same glass (d) how much of each liquid
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
11. 11.🧺 Which of these is not needed for the density tower? (a) a spoon (b) cooking oil (c) honey (d) a magnet
12. 12.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a magnet (c) cotton wool (d) a balloon
13. 13.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
14. 14.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass leaks (c) ice escapes the glass (d) the glass sweats
15. 15.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an ice cube (c) a coin (d) an empty capped bottle
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a drinking straw (c) two chairs (d) a battery cell
17. 17.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a crumpled paper ball (c) a feather (d) a glass marble
18. 18.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) it goes faster (c) less friction (d) more friction, less far
19. 19.True or false: sand dissolves in water. (a) True (b) False
20. 20.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a suction hook
21. 21.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to stop the spinning (b) to weigh down the bottom (c) to make it fall slower (d) to make it magnetic
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sand (d) sugar
24. 24.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
29. 29.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
33. 33.💧 Which of these is freezing? (a) water becoming ice (b) dew on morning grass (c) a puddle drying up (d) butter going runny
34. 34.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a comb (c) a teaspoon (d) honey
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a piece of foil
36. 36.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) sugar left unstirred (d) a big sugar cube
37. 37.True or false: a glass marble does not let water climb. (a) False (b) True
38. 38.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.True or false: turmeric powder is not needed for the density tower. (a) False (b) True

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