Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 611 · 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 is the odd one out? (a) a pebble (b) a cork (c) a glass marble (d) very salty water
2. 2.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a magnet (c) a strip of paper (d) safety scissors
3. 3.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.True or false: yeast is needed for the water rainbow. (a) True (b) False
5. 5.True or false: a plastic ruler lets water climb up it. (a) True (b) False
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well
8. 8.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) leave them wet (c) wipe them dry (d) slide on them
9. 9.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
10. 10.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) safety scissors (d) a paper clip
13. 13.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) cooking oil (c) a spoon (d) water with food colour
15. 15.⚖️ 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 what we measure. (a) False (b) True
16. 16.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) sand (d) chalk powder
18. 18.True or false: sugar is needed for the dissolving test. (a) True (b) False
19. 19.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
20. 20.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
21. 21.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
22. 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) vinegar (d) two chairs
23. 23.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) a spoon (d) a mirror
24. 24.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) food colour (d) small pebbles
25. 25.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
27. 27.🧺 Which of these is needed for the density tower? (a) cooking oil (b) a mirror (c) yeast (d) a battery cell
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) a magnet (d) a tub of water
29. 29.📘 What is the push of air on a falling thing called? (a) air resistance (b) dissolving (c) floating (d) magnetism
30. 30.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a glass marble (d) a cork
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the amount of water (c) the size of the bowl (d) the time we wait
32. 32.True or false: a cotton thread does not let water climb. (a) False (b) True
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) a magnet (d) a tall clear glass
34. 34.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
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.💧 Which change is this: dew on morning grass? (a) freezing (b) evaporation (c) melting (d) condensation
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
39. 39.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
40. 40.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking

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