Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 544 · 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.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
3. 3.True or false: a metal key floats on water. (a) True (b) False
4. 4.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
5. 5.🥄 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) baking soda (d) glucose powder
6. 6.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
8. 8.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
9. 9.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
10. 10.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it spins round (d) it turns into a ball
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) a small cup (b) a balloon (c) yeast (d) a mirror
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a battery cell (d) a long string
15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a fluff of cotton (d) a stone
16. 16.True or false: an ice cube sinks in water. (a) False (b) True
17. 17.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) chew them (d) throw them away safely
18. 18.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a piece of foil
19. 19.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) the rocket (d) water a swimmer pushes
20. 20.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it spread in the water (d) it sank as sand
21. 21.True or false: yeast is not needed for the water rainbow. (a) True (b) False
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) turmeric powder (d) food colour
23. 23.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) water becoming ice (b) ice becoming water (c) making ice lollies (d) a pond icing over
25. 25.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
26. 26.🥄 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) sand
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
28. 28.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
29. 29.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
30. 30.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) two clear glasses (d) a balloon
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a magnet
32. 32.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) yeast (d) bright sunlight
34. 34.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the water layer (c) under the honey (d) in the honey layer
35. 35.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a pencil (c) a strip of paper (d) a ruler
36. 36.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an empty capped bottle (c) a steel spoon (d) an ice-cream stick
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a towel (d) a stiff postcard
38. 38.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor

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