Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 304 · 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.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
2. 2.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
3. 3.🔮 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
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) the same glass (c) how full the glass is (d) whether the card stays
7. 7.💧 Which of these is freezing? (a) wet clothes drying (b) water becoming ice (c) drops under a pot lid (d) ice becoming water
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
9. 9.True or false: very salty water is less dense than water. (a) False (b) True
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) False (b) True
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a glass of water (d) a sink or a bucket
12. 12.⚖️ 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 glass”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.True or false: a balloon is needed for the dissolving test. (a) False (b) True
15. 15.True or false: a mirror is not needed for the density tower. (a) False (b) True
16. 16.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) sunlight (c) a small cup (d) a big bowl
17. 17.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) it changes colour (d) hot water is magnetic
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🚁 Which of these falls slowly through the air? (a) an open sheet of paper (b) a crumpled paper ball (c) a glass marble (d) a steel spoon
20. 20.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a towel (d) a glass of water
22. 22.🛟 Which of these sinks in water? (a) a feather (b) a piece of thermocol (c) a glass marble (d) an ice cube
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) the slope of the string (d) distance it travels
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: a suction hook works by air pressure. (a) True (b) False
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) turmeric powder (d) a sheet of white paper
27. 27.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the water layer (d) in the honey layer
28. 28.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
29. 29.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a mirror (c) a drinking straw (d) a battery cell
30. 30.True or false: a mirror is needed for the density tower. (a) False (b) True
31. 31.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) distance it travels (c) the same tape (d) how big we blow it
33. 33.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
34. 34.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) cold water (c) a teaspoon (d) two clear glasses
36. 36.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
37. 37.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a plastic ruler (d) a glass marble
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) whether it floats (c) the shape of the clay (d) the amount of clay

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