Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 460 · 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 colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
2. 2.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
3. 3.True or false: yeast is not needed for the paper helicopter. (a) False (b) True
4. 4.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it turns blue (c) it floats up (d) it dissolves
5. 5.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a drinking straw
8. 8.🥄 Which of these does not dissolve in water? (a) table salt (b) sugar (c) baking soda (d) sand
9. 9.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) cling film (c) a small cup (d) water
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
11. 11.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
12. 12.🌈 In VIBGYOR, what number colour is red?
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) turmeric powder (c) sticky tape (d) a drinking straw
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) False (b) True
15. 15.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
16. 16.True or false: a coin sinks in water. (a) False (b) True
17. 17.🚁 Which of these falls slowly through the air? (a) a stone (b) a steel spoon (c) a glass marble (d) a paper helicopter
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) leave them wet (d) wipe them dry
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
23. 23.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
24. 24.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the length of the stem (c) the room it stands in (d) the amount of water
28. 28.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) poke it with a finger (d) taste it
29. 29.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sawdust (d) food colour
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they become solid (d) they separate again
32. 32.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
33. 33.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🛟 Which of these floats on water? (a) a steel spoon (b) a cork (c) an iron nail (d) a metal key
36. 36.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
37. 37.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) two clear glasses (d) a teaspoon
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the length of the blades (c) time to reach the floor (d) the person dropping
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) the amount of water (d) the amount of sugar

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