Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 324 · 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 — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
3. 3.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
4. 4.True or false: cooking oil is less dense than water. (a) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic pin holder (c) a vacuum cleaner (d) a suction hook
6. 6.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a cotton thread
7. 7.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a sunny window
9. 9.True or false: honey is denser than water. (a) False (b) True
10. 10.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) yeast (c) a paper clip (d) turmeric powder
11. 11.True or false: a big sugar cube dissolves slower. (a) False (b) True
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) turmeric powder (c) a magnet (d) a strip of paper
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the cling film cover (c) sun or shade (d) how many drops form
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which change is this: wet hair drying? (a) evaporation (b) freezing (c) condensation (d) melting
17. 17.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
20. 20.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a piece of foil
21. 21.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
22. 22.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
23. 23.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a magnetic chess set (d) a fridge magnet
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a towel for spills (d) a balloon
25. 25.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
27. 27.🥄 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) table salt (d) sand
28. 28.⚖️ 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 pouring (b) the order of the layers (c) the same glass (d) how much of each liquid
29. 29.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar in icy water (d) sugar stirred well
30. 30.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
32. 32.True or false: a paper helicopter falls slowly through the air. (a) False (b) True
33. 33.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in warm water (c) sugar left unstirred (d) sugar in icy water
34. 34.True or false: a fridge magnet works by magnetism. (a) False (b) True
35. 35.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
36. 36.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is heavy (d) hot water is magnetic
37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a rubber eraser (d) a strip of cloth
38. 38.True or false: a cork sinks in water. (a) False (b) True
39. 39.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
40. 40.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice

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