Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 347 · 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.True or false: a spoon is needed for the density tower. (a) True (b) False
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
4. 4.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sugar (d) sawdust
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) yeast
6. 6.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
8. 8.True or false: a piece of thermocol floats on water. (a) False (b) True
9. 9.True or false: a medicine dropper works by air pressure. (a) False (b) True
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the time of day
11. 11.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
12. 12.True or false: a pebble is denser than water. (a) True (b) False
13. 13.True or false: sugar in icy water dissolves slower. (a) False (b) True
14. 14.⚖️ 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) the same glass (b) the time of day (c) the amount of water (d) brightness of rainbow
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
16. 16.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the size of the bowl (b) how many drops form (c) the cling film cover (d) sun or shade
17. 17.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a vacuum cleaner (d) a medicine dropper
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) food colour (d) a magnet
20. 20.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) from your raised hand (d) a roof edge
23. 23.True or false: air from the balloon goes forward. (a) True (b) False
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) yeast (d) a magnet
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
29. 29.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) an empty capped bottle (d) an iron nail
30. 30.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the rocket (d) air from the balloon
33. 33.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) a few ice cubes (d) more plain water
34. 34.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
35. 35.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.True or false: honey is less dense than water. (a) False (b) True
37. 37.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
38. 38.True or false: a mirror is not needed for the density tower. (a) True (b) False
39. 39.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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