Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 59 · 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 amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the balloon (d) gas from the rocket
3. 3.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to salt (c) it turns to ice (d) some water evaporates
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) a battery cell (c) a small cup (d) ice cubes
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.True or false: glucose powder does not dissolve in water. (a) True (b) False
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
9. 9.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🛟 Does a cork float or sink in water? (a) sinks (b) floats
11. 11.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a battery cell (d) a magnet
12. 12.🌈 In VIBGYOR, what number colour is red?
13. 13.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is less dense (d) oil is hot
14. 14.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) turmeric powder (c) yeast (d) a paper clip
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a sink or a bucket (d) a magnet
17. 17.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a tub of water (c) a towel for spills (d) a results table
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the length of the blades (c) the drop height (d) the paper clip
21. 21.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a mirror (d) a clear glass of water
22. 22.True or false: food colour does not dissolve in water. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a toy parachute (b) an open sheet of paper (c) a stone (d) a paper helicopter
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the time of day (c) the amount of water (d) the same glass
26. 26.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a wobbly chair (d) a high window ledge
27. 27.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
28. 28.True or false: a pencil is not needed for the paper helicopter. (a) False (b) True
29. 29.🧺 Which of these is needed for the density tower? (a) yeast (b) a magnet (c) water with food colour (d) a balloon
30. 30.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) when the air runs out (d) it never stops
31. 31.True or false: food colour dissolves in water. (a) True (b) False
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
33. 33.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the length of the stem (c) the amount of colour (d) time for colour to show
35. 35.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a balloon (d) a mirror
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
38. 38.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a medicine dropper (d) a vacuum cleaner
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a long string (d) a battery cell

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