Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 870 · 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 colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
2. 2.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) yeast (d) a battery cell
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
6. 6.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
7. 7.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
8. 8.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) sticky tape (d) a magnet
9. 9.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
10. 10.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a ping-pong ball (c) an ice cube (d) a steel spoon
11. 11.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
12. 12.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) False (b) True
13. 13.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) bright sunlight
15. 15.True or false: sugar stirred well dissolves slower. (a) True (b) False
16. 16.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) in the water layer (c) on top of the oil (d) at the very bottom
17. 17.🔍 Which is the odd one out? (a) snow turning to water (b) ice becoming water (c) dew on morning grass (d) butter going runny
18. 18.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) gardening shears (c) safety scissors (d) a paper cutter
19. 19.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
20. 20.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) throw them away safely (d) chew them
21. 21.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice cube (c) a pebble (d) an ice-cream stick
22. 22.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a piece of chalk
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil turns into honey (d) oil attracts magnets
25. 25.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) slide on them (d) leave them wet
26. 26.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) food colour (d) chalk powder
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
31. 31.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🔍 Which is the odd one out? (a) an ice cube (b) an empty capped bottle (c) a feather (d) a steel spoon
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
36. 36.🍯 Which of these is less dense than water? (a) an ice cube (b) honey (c) a coin (d) very salty water
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
39. 39.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
40. 40.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter

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