Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 920 · 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 a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a paper towel (d) a strip of cloth
3. 3.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
4. 4.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
5. 5.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
6. 6.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a coin (c) a fluff of cotton (d) a paper helicopter
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) sunlight (c) a big bowl (d) cling film
9. 9.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
10. 10.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) a sheet of glass (c) the crumpled ball (d) the flat sheet
12. 12.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
13. 13.True or false: a plastic ruler does not let water climb. (a) False (b) True
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
15. 15.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
16. 16.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) turmeric powder (c) a balloon (d) a paper clip
17. 17.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
18. 18.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
19. 19.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
21. 21.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
23. 23.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) a big bowl (c) yeast (d) a small cup
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the drop height (c) time to reach the floor
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a glass marble (d) a steel spoon
27. 27.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a piece of foil
28. 28.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
29. 29.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) taste each layer (d) do not lick the spoon
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) the size of the bowl (c) the amount of water (d) sun or shade
33. 33.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it bounces up (d) it sinks
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) how much of each liquid (b) the order of the layers (c) the order of pouring
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) yeast (d) a tall clear glass
36. 36.True or false: a comb is not needed for the dissolving test. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
38. 38.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
39. 39.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) glucose powder
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a white flower (d) a few hours of waiting

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