Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 454 · 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 the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) False (b) True
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
4. 4.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
6. 6.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) a sheet of glass (d) the flat sheet
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
8. 8.True or false: the balloon goes backward. (a) True (b) False
9. 9.🧺 Which of these is needed for the density tower? (a) water with food colour (b) yeast (c) a balloon (d) a mirror
10. 10.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
11. 11.⚖️ 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) distance it travels (c) the slope of the string (d) how big we blow it
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) chalk powder (d) food colour
13. 13.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
14. 14.⚖️ 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
15. 15.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
16. 16.⚖️ 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 measure it (c) we keep it the same
17. 17.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
20. 20.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
21. 21.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) a glass marble (d) a cork
24. 24.True or false: a balloon is needed for the density tower. (a) True (b) False
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
26. 26.True or false: yeast is needed for the balloon rocket. (a) True (b) False
27. 27.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) it changes colour (d) hot water is magnetic
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a glass of water
29. 29.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.True or false: a ball of clay floats on water. (a) False (b) True
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) False (b) True
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔍 Which is the odd one out? (a) a cork (b) an empty capped bottle (c) an ice-cream stick (d) a glass marble
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the same white paper (c) the time of day (d) brightness of rainbow
36. 36.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) turmeric powder (d) a long string
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) False (b) True
40. 40.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed

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