Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 49 · 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 a mirror for the float-or-sink test? (a) not needed (b) needed
2. 2.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar in icy water (c) sugar stirred well (d) powdered sugar
3. 3.True or false: an iron nail sinks in water. (a) True (b) False
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a small cup (c) a battery cell (d) ice cubes
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
8. 8.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.💧 Which change is this: a misty bathroom mirror? (a) evaporation (b) melting (c) condensation (d) freezing
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) all of it dissolves (d) the water turns solid
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) sunlight (b) a balloon (c) a mirror (d) yeast
14. 14.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a big bowl (c) yeast (d) ice cubes
15. 15.True or false: yeast is needed for the water rainbow. (a) False (b) True
16. 16.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
17. 17.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic pin holder (d) a compass needle
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a compass needle (d) a magnetic pin holder
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a long string (d) a mirror
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the kind of flower (c) the room it stands in (d) time for colour to show
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) the same three liquids (c) the order of the layers (d) the order of pouring
24. 24.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🔍 Which is the odd one out? (a) a pond icing over (b) snow turning to water (c) water becoming ice (d) making ice lollies
26. 26.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
27. 27.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
28. 28.🔍 Which is the odd one out? (a) a toy parachute (b) an open sheet of paper (c) a fluff of cotton (d) a glass marble
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
31. 31.⚖️ 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 shape of the clay (b) the amount of clay (c) the kind of clay (d) whether it floats
32. 32.🔍 Which is the odd one out? (a) an empty capped bottle (b) a coin (c) a feather (d) a piece of thermocol
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
35. 35.⚖️ 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 measure it (c) we change it
36. 36.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🥄 Which of these does not dissolve in water? (a) chalk powder (b) baking soda (c) sugar (d) food colour
40. 40.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up

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