Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 188 · 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.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
2. 2.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
3. 3.🔍 Which is the odd one out? (a) a toy parachute (b) a paper helicopter (c) a fluff of cotton (d) a coin
4. 4.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) cooking oil (c) a spoon (d) a tall clear glass
5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a strip of cloth (d) a steel spoon
6. 6.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a cork (c) an ice cube (d) an iron nail
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
8. 8.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
9. 9.True or false: sugar dissolves in water. (a) False (b) True
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a magnet (d) a results table
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) distance it travels (c) how big we blow it (d) the same straw
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the size of the bowl
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the same white paper (c) the time of day (d) brightness of rainbow
14. 14.🔍 Which is the odd one out? (a) a puddle drying up (b) wet hair drying (c) wet clothes drying (d) a pond icing over
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to salt (d) it turns to smoke
17. 17.True or false: a paper towel lets water climb up it. (a) False (b) True
18. 18.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
20. 20.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) sunlight (c) a big bowl (d) turmeric powder
22. 22.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a drinking straw
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
25. 25.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
26. 26.🥄 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) table salt (d) chalk powder
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
28. 28.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
29. 29.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar in icy water (d) powdered sugar
30. 30.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it became air (d) it sank as sand
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
33. 33.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
36. 36.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a balloon
38. 38.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True

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