Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 784 · 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.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) a tall clear glass (d) a balloon
2. 2.True or false: a piece of thermocol sinks in water. (a) True (b) False
3. 3.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a piece of foil (d) a rubber eraser
4. 4.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) on top of the oil (c) in the oil layer (d) at the very bottom
5. 5.🥄 Which of these dissolves faster? (a) sugar in icy water (b) powdered sugar (c) sugar left unstirred (d) a big sugar cube
6. 6.🛟 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
7. 7.True or false: water becoming ice is melting. (a) True (b) False
8. 8.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
10. 10.True or false: a feather falls slowly through the air. (a) False (b) True
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a magnet (d) a teaspoon
12. 12.True or false: sugar in warm water dissolves slower. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a ping-pong ball (d) a glass marble
14. 14.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
16. 16.🔍 Which is the odd one out? (a) food colour (b) sugar (c) glucose powder (d) cooking oil
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) powdered sugar (d) sugar in warm water
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a drinking straw (c) two chairs (d) sticky tape
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) a balloon (d) a towel for spills
22. 22.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) sunshine (c) lightning (d) rain
23. 23.🔍 Which is the odd one out? (a) a metal key (b) a glass marble (c) a feather (d) a steel spoon
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) time to dissolve
26. 26.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) turmeric powder (d) honey
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
30. 30.🌈 In VIBGYOR, what number colour is blue?
31. 31.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
32. 32.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a balloon (d) yeast
33. 33.🔍 Which is the odd one out? (a) sweat drying on skin (b) wet hair drying (c) a misty bathroom mirror (d) a puddle drying up
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a battery cell (d) a tub of water
35. 35.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) sunlight (b) a mirror (c) a magnet (d) a battery cell
37. 37.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) air (d) an ice cube
38. 38.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
39. 39.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
40. 40.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast

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