Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 200 · 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 sinks in water? (a) a ping-pong ball (b) an empty capped bottle (c) a coin (d) a cork
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a cork (c) a ball of clay (d) a pebble
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a towel
4. 4.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
7. 7.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the water temperature (d) the stirring
9. 9.True or false: a pond icing over is freezing. (a) False (b) True
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a plastic ruler (d) a strip of cloth
13. 13.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
14. 14.True or false: the swimmer goes backward. (a) True (b) False
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) aim it at your friend (d) put string round a neck
17. 17.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) two clear glasses (d) a comb
19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of the layers (b) the same three liquids (c) how much of each liquid (d) the order of pouring
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a spoon (d) turmeric powder
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
26. 26.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a feather (c) a paper helicopter (d) a toy parachute
29. 29.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
31. 31.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
32. 32.🔍 Which is the odd one out? (a) dew on morning grass (b) wet clothes drying (c) wet hair drying (d) a puddle drying up
33. 33.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) turmeric powder (d) a small cup
34. 34.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a battery cell (c) safety scissors (d) a strip of paper
35. 35.📘 What is the push of air on a falling thing called? (a) floating (b) dissolving (c) magnetism (d) air resistance
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
37. 37.⚖️ 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 kept the same. (a) True (b) False
38. 38.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.True or false: warm water is needed for the dissolving test. (a) True (b) False
40. 40.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True

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