Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 50 · 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.🛟 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
2. 2.True or false: a cotton thread does not let water climb. (a) True (b) False
3. 3.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a piece of foil (d) a plastic ruler
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
6. 6.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🔍 Which is the odd one out? (a) an ice cube (b) cooking oil (c) a ping-pong ball (d) a coin
10. 10.⚖️ 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
11. 11.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it spins round (d) it flies upward
12. 12.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) magnetism (c) the wind (d) air pressure
13. 13.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sugar (d) sawdust
14. 14.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a cotton thread (d) a paper towel
16. 16.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
17. 17.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it falls upward (c) it turns blue (d) it spins the other way
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ 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 same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) a mirror (d) two clear glasses
23. 23.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) cotton wool (d) sugar
26. 26.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of colour (c) the room it stands in (d) the length of the stem
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a battery cell (d) yeast
30. 30.📘 What is water vapour? (a) a kind of smoke (b) tiny ice cubes (c) salty water (d) water as a gas
31. 31.True or false: a balloon is needed for the density tower. (a) True (b) False
32. 32.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a steel spoon (d) a sugar cube
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
37. 37.True or false: a comb is not needed for the dissolving test. (a) True (b) False
38. 38.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) only yellow light (d) tiny drops of water
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a balloon

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