Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 309 · 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 is the odd one out? (a) dew on morning grass (b) a misty bathroom mirror (c) drops under a pot lid (d) wet clothes drying
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a ball of clay (d) an empty capped bottle
3. 3.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a magnet (c) a balloon (d) cotton wool
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
5. 5.True or false: a magnetic chess set works by magnetism. (a) True (b) False
6. 6.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) sharp kitchen shears (d) safety scissors
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
8. 8.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a plastic ruler (d) a flower stem
9. 9.True or false: a long string is needed for the balloon rocket. (a) True (b) False
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
11. 11.💧 Which of these is condensation? (a) sweat drying on skin (b) drops on a cold glass (c) ice becoming water (d) wet clothes drying
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a glass of water
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
14. 14.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) sea water is warm (d) its hollow shape
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) turmeric powder (d) a balloon
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.True or false: a puddle drying up is freezing. (a) True (b) False
18. 18.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
20. 20.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) give them to a baby (d) chew them
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) yeast (d) a magnet
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
23. 23.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a ruler (d) a mirror
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
26. 26.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a ruler (d) turmeric powder
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
29. 29.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
31. 31.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
32. 32.True or false: a strip of cloth lets water climb up it. (a) False (b) True
33. 33.💧 Which change is this: butter going runny? (a) evaporation (b) freezing (c) melting (d) condensation
34. 34.True or false: table salt dissolves in water. (a) True (b) False
35. 35.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
36. 36.True or false: sugar dissolves in water. (a) True (b) False
37. 37.💧 Which change is this: making ice lollies? (a) freezing (b) melting (c) evaporation (d) condensation
38. 38.True or false: turmeric powder is needed for the paper helicopter. (a) True (b) False
39. 39.True or false: a ping-pong ball is less dense than water. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True

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