Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 352 · 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 is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) leave water on the floor (d) play near a deep pond
2. 2.⚖️ 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
3. 3.📘 What is water vapour? (a) tiny ice cubes (b) a kind of smoke (c) water as a gas (d) salty water
4. 4.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
5. 5.🍯 Which of these is denser than water? (a) cooking oil (b) air (c) an ice cube (d) honey
6. 6.🌈 In VIBGYOR, what number colour is blue?
7. 7.🔍 Which is the odd one out? (a) very salty water (b) a ping-pong ball (c) cooking oil (d) an ice cube
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) the size of the bowl (c) how many drops form (d) the amount of water
9. 9.⚖️ 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 the layers”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the water temperature (c) the amount of water (d) the stirring
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) turmeric powder (d) yeast
12. 12.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
13. 13.⚖️ 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 the one thing we change. (a) True (b) False
14. 14.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) in the oil layer (d) on top of the oil
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) yeast (d) turmeric powder
17. 17.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls slowly (b) falls fast
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a tall clear glass (c) a spoon (d) water with food colour
19. 19.True or false: sugar left unstirred dissolves faster. (a) True (b) False
20. 20.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) gas from the rocket (d) the balloon
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) it goes faster (d) no change at all
23. 23.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
24. 24.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a clock or timer (c) warm water (d) a balloon
26. 26.True or false: a paper towel lets water climb up it. (a) True (b) False
27. 27.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
28. 28.True or false: a flower stem does not let water climb. (a) False (b) True
29. 29.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
30. 30.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
31. 31.🥄 Which of these does not dissolve in water? (a) baking soda (b) sand (c) glucose powder (d) table salt
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) turmeric powder (d) a drinking straw
33. 33.🧺 Do we need honey for the density tower? (a) needed (b) not needed
34. 34.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: a steel spoon sinks in water. (a) False (b) True
36. 36.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the rowing boat (d) water a swimmer pushes
37. 37.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism

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