Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 29 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.True or false: a mirror is needed for the dissolving test. (a) False (b) True
8. 8.🚁 Which of these falls slowly through the air? (a) a stone (b) a glass marble (c) a coin (d) a feather
9. 9.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) the floor pushes it (c) a magnet holds it (d) air pushes on its blades
10. 10.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) vinegar (c) a mirror (d) a drinking straw
11. 11.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a magnet (d) a clear glass of water
13. 13.True or false: sugar is needed for the dissolving test. (a) False (b) True
14. 14.True or false: a mirror is needed for the density tower. (a) True (b) False
15. 15.💧 Which change is this: drops under a pot lid? (a) evaporation (b) condensation (c) melting (d) freezing
16. 16.🔍 Which is the odd one out? (a) sweat drying on skin (b) butter going runny (c) a puddle drying up (d) wet clothes drying
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a mirror (c) small test objects (d) a results table
18. 18.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a magnet (c) a ruler (d) a paper clip
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) a teaspoon (d) a balloon
20. 20.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) cold water (c) warm water (d) sugar
21. 21.True or false: a compass needle works by magnetism. (a) False (b) True
22. 22.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls slowly (b) falls fast
23. 23.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) spilled oil is slippery (d) oil attracts magnets
24. 24.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
27. 27.True or false: a magnet is needed for the dissolving test. (a) False (b) True
28. 28.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
29. 29.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
30. 30.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
31. 31.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
32. 32.True or false: a coin falls fast through the air. (a) False (b) True
33. 33.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) behind you (d) in front of you
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a sugar cube (d) a cotton thread
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) warm water (d) cotton wool
38. 38.True or false: a pebble sinks in water. (a) False (b) True
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the densest (d) it is the stickiest

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