Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 443 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a battery cell
2. 2.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) chalk powder (d) sand
7. 7.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
9. 9.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
10. 10.⚖️ 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) how much of each liquid (c) the same glass (d) the order of the layers
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) vinegar (d) a long string
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same straw (c) distance it travels (d) how big we blow it
14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is what we measure. (a) False (b) True
16. 16.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
17. 17.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) faster (c) it stops in the air (d) it floats up
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) yeast (d) a sink or a bucket
19. 19.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a paper towel (d) a rubber eraser
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
22. 22.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a battery cell (c) a ruler (d) a pencil
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
27. 27.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
28. 28.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a bicycle pump
29. 29.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
30. 30.True or false: sugar left unstirred dissolves slower. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sawdust (d) sugar
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.True or false: water a swimmer pushes goes forward. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a steel spoon
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) the length of the blades (c) the drop height (d) time to reach the floor
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) whether the card stays (c) how full the glass is
37. 37.True or false: water becoming ice is condensation. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
39. 39.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the coldest (c) it is the densest (d) it is yellow
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a balloon (d) a glass of water

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