Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 79 · 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.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a balloon (d) a pencil
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
3. 3.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil attracts magnets (d) oil turns into honey
4. 4.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) cooking oil (d) chalk powder
5. 5.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a plastic ruler (d) a cotton thread
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
9. 9.🍯 Which of these is denser than water? (a) air (b) a ping-pong ball (c) very salty water (d) an ice cube
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
11. 11.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
12. 12.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
13. 13.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) on top of the oil (d) in the water layer
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sand (d) sugar
18. 18.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
19. 19.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
20. 20.True or false: an ice cube floats on water. (a) True (b) False
21. 21.True or false: making ice lollies is melting. (a) True (b) False
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same tape
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a magnet (c) safety scissors (d) a strip of paper
26. 26.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
27. 27.💧 Which of these is melting? (a) wet clothes drying (b) drops under a pot lid (c) butter going runny (d) water becoming ice
28. 28.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it settles at the bottom (c) it dissolves (d) it turns blue
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
30. 30.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) they turn to ice (d) faster
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) violet (d) red
34. 34.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) the crumpled ball (d) a sheet of glass
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🌈 How many colours do we name in a rainbow (VIBGYOR)?
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a magnet (d) a glass of water
40. 40.⚖️ 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 measure it (c) we change it

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