Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 691 · 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 — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the kind of paper (c) the length of the blades (d) time to reach the floor
2. 2.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
3. 3.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a cotton thread (d) a steel spoon
4. 4.True or false: a dry leaf sinks in water. (a) True (b) False
5. 5.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.True or false: a glass marble falls slowly through the air. (a) True (b) False
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the kind of paper (c) the length of the blades (d) the paper clip
9. 9.True or false: cooking oil is needed for the density tower. (a) False (b) True
10. 10.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the kind of sugar (c) the amount of water (d) the amount of sugar
12. 12.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) sharp kitchen shears (d) a paper cutter
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a battery cell (d) a mirror
14. 14.True or false: a suction hook works by magnetism. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a magnet (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sand (d) food colour
19. 19.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) it looks nicer (d) water is heavier
22. 22.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a steel spoon (c) a toy parachute (d) a glass marble
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a white flower (d) a balloon
25. 25.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
26. 26.🧺 Which of these is needed for the density tower? (a) a battery cell (b) water with food colour (c) turmeric powder (d) a mirror
27. 27.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
28. 28.True or false: a balloon is needed for the dissolving test. (a) False (b) True
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a wobbly chair (c) a roof edge (d) a high window ledge
32. 32.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
33. 33.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) glucose powder (d) sugar
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
39. 39.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
40. 40.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) neither of them (c) the flat sheet (d) the crumpled ball

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