Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 727 · 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 amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 Which of these is needed for the density tower? (a) yeast (b) a mirror (c) water with food colour (d) a magnet
3. 3.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
4. 4.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a medicine dropper
5. 5.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a battery cell (d) a ruler
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
9. 9.True or false: a metal key sinks in water. (a) True (b) False
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a magnet (d) ice cubes
11. 11.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧺 Which of these is needed for the density tower? (a) yeast (b) a battery cell (c) cooking oil (d) turmeric powder
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the order of the layers (c) how much of each liquid (d) the same glass
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) a big bowl (c) water (d) a small cup
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a glass of water
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) how big we blow it (c) the same string (d) the same tape
17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) a mirror (d) a battery cell
19. 19.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
20. 20.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a strip of cloth (d) a plastic ruler
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) small test objects (c) a results table (d) a tub of water
23. 23.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
24. 24.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
25. 25.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) turmeric powder (d) a strip of paper
27. 27.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
28. 28.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
29. 29.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
30. 30.True or false: water is needed for the water cycle bowl. (a) True (b) False
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
32. 32.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls slowly (b) falls fast
33. 33.True or false: a misty bathroom mirror is condensation. (a) True (b) False
34. 34.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
35. 35.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it vanished for ever (d) it became air
36. 36.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a cotton thread (d) a rubber eraser
37. 37.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) two chairs
39. 39.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
40. 40.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a comb (c) two clear glasses (d) a balloon

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