Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 478 · 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.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True
2. 2.⚖️ 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 drop height (c) time to reach the floor (d) the person dropping
3. 3.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) sugar (c) a clock or timer (d) warm water
7. 7.💧 Which change is this: snow turning to water? (a) evaporation (b) condensation (c) melting (d) freezing
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a ruler (c) a balloon (d) a strip of paper
9. 9.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water can scald (d) hot water is heavy
10. 10.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
11. 11.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
12. 12.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a paper clip (c) turmeric powder (d) yeast
13. 13.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a battery cell (d) honey
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a drinking straw (d) a medicine dropper
16. 16.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
17. 17.🛟 Does a coin float or sink in water? (a) floats (b) sinks
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 sink or a bucket (c) a balloon (d) a glass of water
19. 19.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
20. 20.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) safety scissors (c) a strip of paper (d) a magnet
21. 21.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil makes it rain (d) oil turns into honey
22. 22.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) sharp kitchen shears (d) safety scissors
23. 23.True or false: water a swimmer pushes goes backward. (a) True (b) False
24. 24.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
25. 25.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the coldest (d) it is the densest
26. 26.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) cooking oil (d) glucose powder
27. 27.True or false: air is denser than water. (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 the one thing we change. (a) False (b) True
29. 29.True or false: cooking oil is not needed for the density tower. (a) False (b) True
30. 30.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
32. 32.🍯 Which of these is denser than water? (a) a cork (b) air (c) a glass marble (d) a ping-pong ball
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the drop height (b) time to reach the floor (c) the length of the blades
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) False (b) True
35. 35.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a battery cell (d) a strip of paper
37. 37.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
39. 39.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
40. 40.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed

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