Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 625 · 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 dry leaf sinks in water. (a) True (b) False
2. 2.True or false: a cotton thread does not let water climb. (a) True (b) False
3. 3.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
4. 4.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
5. 5.⚖️ 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 glass is what we measure. (a) False (b) True
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) slower (d) the same
8. 8.💧 Which of these is condensation? (a) butter going runny (b) water becoming ice (c) wet clothes drying (d) a misty bathroom mirror
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the order of pouring (c) the same three liquids (d) the same glass
10. 10.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
11. 11.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the water (d) the tub
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a mirror (d) water with food colour
13. 13.🌈 In VIBGYOR, what number colour is yellow?
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.True or false: the swimmer goes backward. (a) False (b) True
16. 16.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
18. 18.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it makes it heavier (c) it holds water (d) it blows air in
19. 19.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a piece of chalk
21. 21.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
22. 22.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
23. 23.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it goes much farther (d) it flies off the string
26. 26.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
29. 29.🛟 Which of these sinks in water? (a) a feather (b) a metal key (c) a ping-pong ball (d) a piece of thermocol
30. 30.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a paper towel (d) a glass marble
31. 31.💧 Which change is this: ice becoming water? (a) freezing (b) evaporation (c) melting (d) condensation
32. 32.⚖️ 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 what we measure. (a) True (b) False
33. 33.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) three separate layers (c) one mixed colour (d) the glass gets hot
34. 34.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted
36. 36.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a battery cell (c) yeast (d) turmeric powder
37. 37.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
38. 38.⚖️ 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) how many drops form (b) sun or shade (c) the amount of water (d) the time we wait
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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