Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 438 · 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) a battery cell (b) a few hours of waiting (c) a glass of water (d) a white flower
2. 2.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a magnet (d) cold water
3. 3.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) the rocket (d) water a swimmer pushes
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.⚖️ 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 change it (b) we measure it (c) we keep it the same
6. 6.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
10. 10.True or false: a pencil is not needed for the paper helicopter. (a) True (b) False
11. 11.🍯 Which of these is denser than water? (a) a glass marble (b) a ping-pong ball (c) air (d) an ice cube
12. 12.⚖️ 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 “how much of each liquid”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.True or false: a glass marble sinks in water. (a) True (b) False
15. 15.True or false: a cork is denser than water. (a) False (b) True
16. 16.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a clock or timer (c) two clear glasses (d) a mirror
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) sticky tape (d) a magnet
18. 18.🍯 Which of these is denser than water? (a) a ping-pong ball (b) honey (c) air (d) a cork
19. 19.True or false: a cotton thread does not let water climb. (a) False (b) True
20. 20.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
21. 21.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) yeast (c) a paper clip (d) safety scissors
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) distance it travels (d) the slope of the string
26. 26.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) turmeric powder (d) a spoon
28. 28.💧 Which change is this: butter going runny? (a) condensation (b) melting (c) freezing (d) evaporation
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a mirror
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) vinegar (d) two chairs
31. 31.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
32. 32.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) it floats up (c) slower (d) faster
33. 33.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
34. 34.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
35. 35.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) sugar left unstirred
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
37. 37.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
38. 38.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
40. 40.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed

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