Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 802 · 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 the job of the straw on the string? (a) it holds water (b) it blows air in (c) it guides the balloon (d) it makes it heavier
2. 2.🛟 Which of these sinks in water? (a) a dry leaf (b) a cork (c) an empty capped bottle (d) a coin
3. 3.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a stone (c) a crumpled paper ball (d) a fluff of cotton
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the amount of water (d) the kind of sugar
5. 5.🌈 In VIBGYOR, what number colour is orange?
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.True or false: turmeric powder is needed for the water cycle bowl. (a) False (b) True
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a towel for spills (d) turmeric powder
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) food colour (d) a glass of water
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
11. 11.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) in the water layer (d) on top of the oil
12. 12.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the same glass (c) the order of the layers (d) the order of pouring
14. 14.True or false: baking soda dissolves in water. (a) True (b) False
15. 15.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) a magnet
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) a battery cell (d) sticky tape
18. 18.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a teaspoon (c) a clock or timer (d) warm water
20. 20.True or false: powdered sugar dissolves slower. (a) False (b) True
21. 21.True or false: warm water is needed for the dissolving test. (a) False (b) True
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a bicycle pump
24. 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) yeast (d) a balloon
25. 25.True or false: cooking oil is not needed for the density tower. (a) True (b) False
26. 26.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same three liquids (c) the order of pouring
28. 28.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
30. 30.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) the water increases (c) it turns to ice (d) some water evaporates
31. 31.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil makes it rain (d) oil turns into honey
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
33. 33.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a spoon (d) a balloon
36. 36.🔍 Which is the odd one out? (a) snow turning to water (b) ice becoming water (c) butter going runny (d) water becoming ice
37. 37.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
38. 38.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is hot (d) oil is less dense
39. 39.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
40. 40.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed

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