Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 345 · 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.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
2. 2.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.True or false: honey is not needed for the density tower. (a) False (b) True
5. 5.🔮 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
6. 6.⚖️ 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 change it (c) we measure it
7. 7.🔮 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
8. 8.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
9. 9.True or false: a steel spoon does not let water climb. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is what we measure. (a) False (b) True
11. 11.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) cling film (c) ice cubes (d) water
12. 12.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) cooking oil (d) a glass marble
15. 15.True or false: a piece of chalk lets water climb up it. (a) False (b) True
16. 16.True or false: powdered sugar dissolves faster. (a) True (b) False
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
18. 18.True or false: water with food colour is not needed for the density tower. (a) False (b) True
19. 19.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
20. 20.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.💧 Which of these is evaporation? (a) butter going runny (b) snow turning to water (c) a pond icing over (d) wet clothes drying
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.True or false: cooking oil is denser than water. (a) True (b) False
24. 24.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) safety scissors (d) sharp kitchen shears
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) warm water (c) a magnet (d) two clear glasses
26. 26.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) a battery cell (d) water with food colour
28. 28.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
29. 29.💧 Which change is this: sweat drying on skin? (a) condensation (b) evaporation (c) freezing (d) melting
30. 30.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) wet clothes drying (b) a puddle drying up (c) sweat drying on skin (d) butter going runny
32. 32.True or false: a balloon is needed for the water rainbow. (a) True (b) False
33. 33.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) water a swimmer pushes (d) gas from the rocket
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a stiff postcard
35. 35.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
36. 36.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) two clear glasses (d) a teaspoon
38. 38.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
39. 39.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) two chairs (d) a balloon

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