Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 165 · 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.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rowing boat (c) gas from the rocket (d) water from the oars
2. 2.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) True (b) False
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a sunny window (d) a sheet of white paper
5. 5.🔍 Which is the odd one out? (a) water becoming ice (b) drops under a pot lid (c) drops on a cold glass (d) a misty bathroom mirror
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same window (b) the amount of water (c) brightness of rainbow
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) turmeric powder
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a paper clip (d) a balloon
9. 9.🌈 In VIBGYOR, what number colour is red?
10. 10.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
11. 11.True or false: cooking oil is not needed for the density tower. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a cotton thread (d) a sugar cube
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a magnet (c) a towel for spills (d) a tub of water
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a piece of chalk (c) a rubber eraser (d) a glass marble
16. 16.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
17. 17.⚖️ 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 glass is the one thing we change. (a) True (b) False
18. 18.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
19. 19.⚖️ 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 order of pouring”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) safety scissors (d) gardening shears
21. 21.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) air from the balloon (d) the swimmer
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a suction hook
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a drinking straw (c) a long string (d) sticky tape
27. 27.True or false: a compass needle works by magnetism. (a) False (b) True
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same tape
32. 32.True or false: sugar stirred well dissolves slower. (a) False (b) True
33. 33.True or false: a big sugar cube dissolves faster. (a) False (b) True
34. 34.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
35. 35.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) some stays undissolved (c) all of it dissolves (d) the water turns solid
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
37. 37.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
38. 38.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a battery cell (c) a tub of water (d) a results table
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True

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