Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 51 · 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 of these is needed for the dissolving test? (a) honey (b) cold water (c) a magnet (d) a mirror
2. 2.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) give them to a baby (d) throw them away safely
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) yeast (c) a balloon (d) water
6. 6.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it blows air in (c) it makes it heavier (d) it holds water
7. 7.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it spins the other way (c) it falls upward (d) it turns blue
8. 8.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
9. 9.⚖️ 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
10. 10.🥄 Which of these dissolves in water? (a) chalk powder (b) baking soda (c) sawdust (d) cooking oil
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) turmeric powder
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a magnet (d) a towel
14. 14.🥄 Which of these dissolves in water? (a) sugar (b) sawdust (c) chalk powder (d) cooking oil
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🔍 Which is the odd one out? (a) a coin (b) a feather (c) a fluff of cotton (d) an open sheet of paper
18. 18.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) taste it (d) poke it with a finger
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a towel for spills (c) a tub of water (d) small test objects
20. 20.🔍 Which is the odd one out? (a) sand (b) sugar (c) cooking oil (d) chalk powder
21. 21.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
23. 23.True or false: honey is not needed for the density tower. (a) False (b) True
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the kind of flower (c) time for colour to show (d) the length of the stem
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) honey (d) yeast
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
27. 27.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) a balloon (d) vinegar
29. 29.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a bicycle pump (d) a compass needle
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
31. 31.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a balloon (c) water with food colour (d) a tall clear glass
32. 32.💧 Which change is this: making ice lollies? (a) melting (b) condensation (c) evaporation (d) freezing
33. 33.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) small pebbles
34. 34.True or false: air is less dense than water. (a) True (b) False
35. 35.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
36. 36.⚖️ 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) brightness of rainbow (b) the time of day (c) the amount of water (d) the same white paper
37. 37.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) straight above you (d) behind you
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) warm water (c) two clear glasses (d) a clock or timer
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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