Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 981 · 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.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it floats up (c) it stops in the air (d) slower
2. 2.True or false: a coin sinks in water. (a) False (b) True
3. 3.True or false: water is not needed for the water cycle bowl. (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 change it (b) we measure it (c) we keep it the same
5. 5.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) water from the oars (d) the swimmer
6. 6.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) sunshine (c) wind (d) rain
7. 7.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) table salt (d) sugar
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) brightness of rainbow (c) the time of day (d) the amount of water
9. 9.True or false: an ice-cream stick floats on water. (a) True (b) False
10. 10.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
11. 11.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a ping-pong ball (d) cooking oil
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) a magnet (c) turmeric powder (d) yeast
14. 14.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil turns into honey (d) oil attracts magnets
15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) orange (d) violet
16. 16.True or false: a compass needle works by air pressure. (a) True (b) False
17. 17.True or false: a coin falls fast through the air. (a) True (b) False
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) turmeric powder
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True
20. 20.True or false: honey is needed for the dissolving test. (a) True (b) False
21. 21.True or false: a misty bathroom mirror is condensation. (a) False (b) True
22. 22.💧 Which change is this: making ice lollies? (a) melting (b) evaporation (c) condensation (d) freezing
23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
24. 24.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
25. 25.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a sugar cube
26. 26.🧺 Do we need a mirror for the water cycle bowl? (a) needed (b) not needed
27. 27.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
29. 29.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
30. 30.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the bowl freezes (d) the water turns red
31. 31.True or false: gas from the rocket goes forward. (a) False (b) True
32. 32.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
34. 34.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
35. 35.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
37. 37.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) True (b) False
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) honey (d) turmeric powder

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