Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 657 · 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.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they mix for ever (c) they separate again (d) they turn to honey
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a coin (d) a feather
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) pour it on the floor (d) throw the glass
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
5. 5.⚖️ 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 same three liquids”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.True or false: a cotton thread does not let water climb. (a) True (b) False
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
8. 8.True or false: a crumpled paper ball falls slowly through the air. (a) True (b) False
9. 9.💧 Which change is this: a pond icing over? (a) condensation (b) evaporation (c) melting (d) freezing
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the slope of the string
11. 11.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it gets too heavy (d) it changes colour
12. 12.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) on top of the oil (c) in the water layer (d) in the oil layer
13. 13.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) a magnet (d) a tub of water
16. 16.📘 What is the push of air on a falling thing called? (a) air resistance (b) dissolving (c) magnetism (d) floating
17. 17.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
18. 18.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a magnet (c) a small cup (d) a mirror
20. 20.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: chalk powder dissolves in water. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a fluff of cotton (b) a steel spoon (c) a crumpled paper ball (d) a coin
24. 24.🔍 Which is the odd one out? (a) a ball of clay (b) a pebble (c) a ping-pong ball (d) a steel spoon
25. 25.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
26. 26.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
29. 29.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False
30. 30.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) sweat drying on skin (d) snow turning to water
32. 32.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
33. 33.True or false: a drinking straw works by magnetism. (a) True (b) False
34. 34.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice-cream stick (c) a piece of thermocol (d) a pebble
37. 37.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
38. 38.🌈 In VIBGYOR, what number colour is red?
39. 39.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
40. 40.True or false: small pebbles does not dissolve in water. (a) False (b) True

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