Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 232 · 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 “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a magnet (c) cold water (d) sugar
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
4. 4.🛟 Which of these floats on water? (a) a glass marble (b) an ice-cream stick (c) a pebble (d) a coin
5. 5.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) time to dissolve (c) the water temperature (d) the stirring
7. 7.💧 Which of these is evaporation? (a) wet hair drying (b) snow turning to water (c) drops under a pot lid (d) a misty bathroom mirror
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
10. 10.⚖️ 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 measure it (b) we keep it the same (c) we change it
11. 11.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) glucose powder (d) sand
13. 13.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) cling film (c) ice cubes (d) a small cup
15. 15.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the honey layer (d) in the water layer
16. 16.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
17. 17.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it magnetic (b) to make it fall slower (c) to weigh down the bottom (d) to stop the spinning
18. 18.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
19. 19.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) a cork (d) a coin
21. 21.🌈 In VIBGYOR, what number colour is orange?
22. 22.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a drinking straw (d) a suction hook
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a strip of paper (d) a battery cell
24. 24.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a balloon (c) a strip of paper (d) a pencil
25. 25.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
26. 26.⚖️ 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) brightness of rainbow (b) the same white paper (c) the amount of water (d) the time of day
27. 27.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the densest (d) it is the stickiest
28. 28.True or false: a sugar cube lets water climb up it. (a) True (b) False
29. 29.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it became air (d) it sank as sand
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a battery cell
31. 31.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar left unstirred (d) sugar in icy water
32. 32.True or false: air is less dense than water. (a) False (b) True
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) the amount of sugar (d) time to dissolve
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) turmeric powder (d) a mirror
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
37. 37.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a mirror (d) a sundial
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🔍 Which is the odd one out? (a) a toy parachute (b) a crumpled paper ball (c) an open sheet of paper (d) a feather

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