Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 648 · 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 put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) the water turns red (d) more drops form
2. 2.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
3. 3.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
4. 4.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
5. 5.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) small test objects (c) a tub of water (d) a towel for spills
7. 7.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
8. 8.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
9. 9.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a paper clip (c) safety scissors (d) a battery cell
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) honey (c) a spoon (d) a tall clear glass
13. 13.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) chalk powder (d) sand
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) a magnet
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the amount of colour (d) the amount of water
16. 16.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) a battery cell (c) a magnet (d) a mirror
17. 17.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
18. 18.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) yeast (c) turmeric powder (d) a battery cell
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
20. 20.True or false: a battery cell is needed for the density tower. (a) False (b) True
21. 21.⚖️ 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
22. 22.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) aim it at your friend (d) keep it away from faces
23. 23.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
24. 24.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
25. 25.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a piece of foil (d) a rubber eraser
26. 26.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
28. 28.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
29. 29.True or false: a glass marble falls slowly through the air. (a) True (b) False
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) yeast (d) a clear glass of water
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a balloon (d) a glass of water
34. 34.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
35. 35.True or false: cooking oil is not needed for the density tower. (a) False (b) True
36. 36.🍯 Which of these is less dense than water? (a) a ping-pong ball (b) very salty water (c) a glass marble (d) a pebble
37. 37.💧 Which change is this: a puddle drying up? (a) condensation (b) freezing (c) evaporation (d) melting
38. 38.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) how much of each liquid (c) the order of the layers (d) the order of pouring
40. 40.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors

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