Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 652 · 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: a battery cell is not needed for the water cycle bowl. (a) False (b) True
2. 2.🌈 In VIBGYOR, what number colour is green?
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) honey (d) cold water
5. 5.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) glucose powder
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
9. 9.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a coin (c) an ice-cream stick (d) a feather
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar left unstirred (d) powdered sugar
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a results table (d) a tub of water
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil turns into honey (d) oil makes it rain
15. 15.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the amount of colour (c) the length of the stem (d) time for colour to show
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
19. 19.⚖️ 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 amount of water (b) the same glass (c) brightness of rainbow
20. 20.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
21. 21.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
22. 22.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
23. 23.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.💧 Which change is this: ice becoming water? (a) condensation (b) freezing (c) evaporation (d) melting
25. 25.⚖️ 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) True (b) False
26. 26.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the sugar turns to salt (c) the water turns solid (d) some stays undissolved
28. 28.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
29. 29.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water can scald (d) hot water is heavy
30. 30.⚖️ 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) time for colour to show (d) the amount of water
31. 31.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
32. 32.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
33. 33.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
34. 34.True or false: a magnetic chess set works by magnetism. (a) True (b) False
35. 35.💧 Which change is this: a puddle drying up? (a) freezing (b) condensation (c) evaporation (d) melting
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) small test objects (d) a magnet
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) yeast (d) a magnet
38. 38.True or false: yeast is not needed for the paper helicopter. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
40. 40.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) they turn to ice (d) faster

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