Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 627 · 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.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to splash everyone (d) to keep children safe
2. 2.True or false: sugar in warm water dissolves faster. (a) True (b) False
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a battery cell (c) turmeric powder (d) cling film
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) turmeric powder
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a ruler (c) a magnet (d) a strip of paper
8. 8.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: sweat drying on skin is evaporation. (a) True (b) False
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 kept the same. (a) False (b) True
11. 11.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
12. 12.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it turns white (d) it still floats
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a towel for spills (c) turmeric powder (d) a magnet
14. 14.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a sunny window (d) a balloon
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🛟 Which of these floats on water? (a) a pebble (b) a metal key (c) a dry leaf (d) an iron nail
17. 17.True or false: a misty bathroom mirror is condensation. (a) False (b) True
18. 18.💧 Which of these is condensation? (a) snow turning to water (b) making ice lollies (c) water becoming ice (d) drops on a cold glass
19. 19.🔍 Which is the odd one out? (a) a steel spoon (b) a stone (c) a feather (d) a crumpled paper ball
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) small test objects (d) a results table
23. 23.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
25. 25.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it blows air in (c) it makes it heavier (d) it holds water
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) sugar likes the dark (d) cold water is wet
28. 28.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) gas from the rocket (d) the balloon
29. 29.🍯 Which of these is less dense than water? (a) a glass marble (b) honey (c) cooking oil (d) a coin
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a mirror (d) a battery cell
31. 31.True or false: a glass marble floats on water. (a) False (b) True
32. 32.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
33. 33.💧 Which change is this: butter going runny? (a) melting (b) evaporation (c) freezing (d) condensation
34. 34.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: a magnet is needed for the dissolving test. (a) False (b) True
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) water with food colour (d) a magnet
38. 38.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a magnet
40. 40.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) a pencil (d) a battery cell

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