Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 580 · 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 coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) a balloon
2. 2.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
3. 3.True or false: a ping-pong ball sinks in water. (a) False (b) True
4. 4.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
5. 5.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when it turns blue (d) when the air runs out
6. 6.🧺 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 balloon (d) a towel for spills
7. 7.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
9. 9.True or false: wet hair drying is melting. (a) True (b) False
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
11. 11.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a drinking straw (d) yeast
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.💧 Which of these is evaporation? (a) ice becoming water (b) wet clothes drying (c) a pond icing over (d) drops under a pot lid
16. 16.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) small pebbles (d) sawdust
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
18. 18.🔍 Which is the odd one out? (a) water becoming ice (b) dew on morning grass (c) a misty bathroom mirror (d) drops on a cold glass
19. 19.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) two chairs (c) a balloon (d) a drinking straw
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.💧 Which change is this: drops on a cold glass? (a) melting (b) evaporation (c) freezing (d) condensation
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) time to dissolve (c) the water temperature
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
26. 26.True or false: sugar dissolves in water. (a) True (b) False
27. 27.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.True or false: a glass marble does not let water climb. (a) True (b) False
29. 29.⚖️ 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) the same glass (b) the same three liquids (c) the order of the layers (d) the order of pouring
30. 30.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
31. 31.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) more drops form (d) the bowl freezes
32. 32.🛟 Which of these sinks in water? (a) a cork (b) a dry leaf (c) an ice-cream stick (d) a glass marble
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
35. 35.📘 What is water vapour? (a) tiny ice cubes (b) salty water (c) a kind of smoke (d) water as a gas
36. 36.⚖️ 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
37. 37.🧺 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
38. 38.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) a comb (d) warm water
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a balloon (c) sticky tape (d) a drinking straw
40. 40.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a small cup (d) a mirror

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