Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 61 · 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.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) a teaspoon (d) honey
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
3. 3.🔍 Which is the odd one out? (a) making ice lollies (b) a pond icing over (c) wet clothes drying (d) water becoming ice
4. 4.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a battery cell (c) a balloon (d) a paper clip
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
6. 6.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
7. 7.💧 Which of these is melting? (a) drops on a cold glass (b) a pond icing over (c) butter going runny (d) dew on morning grass
8. 8.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it dissolves (d) it sinks
13. 13.True or false: water with food colour is needed for the density tower. (a) False (b) True
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a coin (c) an empty capped bottle (d) a cork
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the kind of sugar (c) time to dissolve
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) turmeric powder (d) a drinking straw
19. 19.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
20. 20.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: a toy parachute falls fast through the air. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a cork (d) a glass marble
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a feather (c) a ball of clay (d) a glass marble
26. 26.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
27. 27.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) yeast (c) a battery cell (d) cooking oil
29. 29.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
30. 30.True or false: a sugar cube does not let water climb. (a) True (b) False
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
33. 33.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) a battery cell (d) cooking oil
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a magnet (d) a towel
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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 the one thing we change. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a flower stem (d) a strip of cloth
39. 39.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it turns to stone (c) it sinks faster (d) it dissolves
40. 40.🍯 Which of these is denser than water? (a) a glass marble (b) a ping-pong ball (c) an ice cube (d) a cork

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