Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 887 · 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 blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
2. 2.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
4. 4.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the densest (c) it is yellow (d) it is the coldest
5. 5.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it turns into a ball (c) it stays still in air (d) it spins round
6. 6.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
7. 7.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
8. 8.📘 What is the push of air on a falling thing called? (a) dissolving (b) air resistance (c) magnetism (d) floating
9. 9.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) gas from the rocket (d) the rowing boat
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the time we wait (c) the amount of water (d) how many drops form
11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a feather (c) a stone (d) a coin
12. 12.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
13. 13.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a cotton thread
14. 14.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) a battery cell
17. 17.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a pebble (c) a dry leaf (d) a piece of thermocol
18. 18.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a clear glass of water (d) yeast
20. 20.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it falls upward (c) it spins the other way (d) it turns blue
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.🧺 Which of these is needed for the density tower? (a) a balloon (b) turmeric powder (c) a tall clear glass (d) yeast
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
24. 24.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
25. 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it turns into a kite (c) it goes much farther (d) it flies off the string
26. 26.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) two clear glasses (d) cotton wool
27. 27.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🚁 Which of these falls slowly through the air? (a) a fluff of cotton (b) a steel spoon (c) a crumpled paper ball (d) a stone
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a glass marble
30. 30.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) slower (c) faster (d) they never dry
31. 31.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
32. 32.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) a magnet (c) a battery cell (d) yeast
33. 33.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
38. 38.⚖️ 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
39. 39.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
40. 40.📘 What does “dense” mean? (a) very thin (b) very hot (c) very colourful (d) heavy for its size

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