Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 893 · 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.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
2. 2.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) bubbles of gas (c) three separate layers (d) the glass gets hot
3. 3.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a tub of water (d) turmeric powder
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) honey (c) cooking oil (d) a tall clear glass
6. 6.🍯 Which of these is less dense than water? (a) a pebble (b) a glass marble (c) honey (d) air
7. 7.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
8. 8.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the water turns red (c) fewer drops form (d) the bowl freezes
9. 9.True or false: a magnetic chess set works by magnetism. (a) True (b) False
10. 10.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a magnet (c) turmeric powder (d) safety scissors
11. 11.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a medicine dropper (d) a magnetic pin holder
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the slope of the string (c) distance it travels (d) how big we blow it
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) a big bowl (c) ice cubes (d) a small cup
15. 15.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is hot (c) oil is sticky (d) oil is less dense
16. 16.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
17. 17.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
18. 18.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) cooking oil (d) a magnet
20. 20.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) the floor pushes it (c) a magnet holds it (d) air pushes on its blades
21. 21.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
22. 22.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
23. 23.🌈 In VIBGYOR, what number colour is green?
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False
25. 25.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a sugar cube (d) a piece of foil
26. 26.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.📘 What does “dense” mean? (a) very hot (b) heavy for its size (c) very colourful (d) very thin
29. 29.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a mirror (d) a magnet
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) small test objects (d) a balloon
32. 32.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) on top of the oil (d) in the water layer
35. 35.True or false: drops under a pot lid is condensation. (a) False (b) True
36. 36.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a magnet
38. 38.True or false: a ball of clay floats on water. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) a glass of water

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