Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 230 · 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.⚖️ 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) the stirring (c) the amount of sugar (d) the amount of water
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sunny window
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) turmeric powder (c) ice cubes (d) a big bowl
5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
6. 6.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
7. 7.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a crumpled paper ball (d) a toy parachute
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
9. 9.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a balloon rocket (c) a sundial (d) a mirror
10. 10.True or false: making ice lollies is melting. (a) True (b) False
11. 11.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) spilled oil is slippery (d) oil turns into honey
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
13. 13.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the water turns solid (d) the sugar turns to salt
15. 15.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) do not lick the spoon (d) taste each layer
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) a magnet (d) a small cup
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) particles move faster (d) cold water is wet
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) safety scissors (d) sharp kitchen shears
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to salt (d) it turns to smoke
24. 24.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
25. 25.True or false: a coin falls fast through the air. (a) True (b) False
26. 26.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
28. 28.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
29. 29.🌈 In VIBGYOR, what number colour is violet?
30. 30.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
31. 31.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
32. 32.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) on top of the oil (c) at the very bottom (d) in the water layer
33. 33.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the time of day (b) brightness of rainbow (c) the amount of water
35. 35.🔍 Which is the odd one out? (a) ice becoming water (b) drops under a pot lid (c) dew on morning grass (d) drops on a cold glass
36. 36.🚀 Which of these goes backward? (a) water from the oars (b) the balloon (c) the swimmer (d) the rocket
37. 37.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
38. 38.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) wet clothes drying (b) wet hair drying (c) a puddle drying up (d) a pond icing over
40. 40.🌈 In VIBGYOR, what number colour is orange?

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