Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 102 · 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.⚖️ 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
2. 2.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a sugar cube
6. 6.🔍 Which is the odd one out? (a) a feather (b) a crumpled paper ball (c) a toy parachute (d) a fluff of cotton
7. 7.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) a few ice cubes (d) lots of salt stirred in
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) False (b) True
9. 9.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
11. 11.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
14. 14.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) air pressure (d) friction
15. 15.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) throw the glass (d) taste each layer
16. 16.💧 Which of these is evaporation? (a) wet clothes drying (b) water becoming ice (c) a misty bathroom mirror (d) drops on a cold glass
17. 17.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) a white flower
19. 19.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) it changes colour (d) hot water can scald
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
22. 22.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil turns into honey (d) oil attracts magnets
23. 23.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it turns to smoke (c) it disappears (d) it turns to salt
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.💧 Which change is this: drops under a pot lid? (a) condensation (b) freezing (c) melting (d) evaporation
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a sugar cube
27. 27.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) a teaspoon (d) sugar
28. 28.True or false: a piece of foil does not let water climb. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) food colour (d) sawdust
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same card
31. 31.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the cork itself (d) the water
32. 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) water with food colour (d) a balloon
33. 33.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
34. 34.🧺 Which of these is needed for the density tower? (a) yeast (b) turmeric powder (c) a tall clear glass (d) a battery cell
35. 35.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) air pushes on its blades (c) it has no weight (d) the floor pushes it
36. 36.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) turmeric powder (d) a glass of water
39. 39.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
40. 40.🛟 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

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