Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 11 · 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 of these is not needed for the dissolving test? (a) two clear glasses (b) a comb (c) cold water (d) sugar
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a battery cell (c) cooking oil (d) water with food colour
4. 4.True or false: cooking oil is needed for the density tower. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) an iron nail (b) a pebble (c) a dry leaf (d) a coin
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a balloon
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🍯 Which of these is less dense than water? (a) a coin (b) a ping-pong ball (c) very salty water (d) honey
14. 14.True or false: cooking oil does not dissolve in water. (a) True (b) False
15. 15.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) a roof edge (d) from your raised hand
18. 18.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
19. 19.💧 Which change is this: a puddle drying up? (a) melting (b) condensation (c) evaporation (d) freezing
20. 20.True or false: turmeric powder is not needed for the water cycle bowl. (a) True (b) False
21. 21.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
23. 23.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
24. 24.🛟 Which of these floats on water? (a) a coin (b) a glass marble (c) a ping-pong ball (d) a steel spoon
25. 25.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
26. 26.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a tub of water (d) a results table
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) the same card (c) the way we turn it (d) how full the glass is
31. 31.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sand (d) baking soda
32. 32.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
35. 35.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) snow falling (d) a magnet
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a fridge magnet
38. 38.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) glucose powder (d) baking soda
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
40. 40.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True

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