Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 774 · 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.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) in the water layer (d) at the very bottom
2. 2.⚖️ 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) brightness of rainbow (c) the same window
3. 3.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
4. 4.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.True or false: safety scissors is needed for the paper helicopter. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a glass marble (d) a piece of chalk
8. 8.🥄 Which of these dissolves in water? (a) small pebbles (b) sugar (c) sand (d) sawdust
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a medicine dropper (d) a drinking straw
11. 11.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it vanished for ever (d) it became air
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
13. 13.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) a towel for spills (d) a results table
15. 15.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
16. 16.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
17. 17.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a sundial (d) a fridge magnet
18. 18.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
19. 19.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is less dense (d) ice is magnetic
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
21. 21.🔍 Which is the odd one out? (a) a feather (b) a coin (c) a glass marble (d) an iron nail
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) yeast (d) a towel for spills
23. 23.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same glass (b) the order of the layers (c) the order of pouring
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
29. 29.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
30. 30.🔮 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 mix for ever (d) they separate again
31. 31.💧 Which change is this: ice becoming water? (a) evaporation (b) freezing (c) melting (d) condensation
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) water (c) ice cubes (d) a balloon
33. 33.True or false: air is less dense than water. (a) True (b) False
34. 34.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
35. 35.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
36. 36.🥛 Which of these works by air pressure? (a) a compass needle (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
37. 37.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) True (b) False
40. 40.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil turns into honey (c) spilled oil is slippery (d) oil makes it rain

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