Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 34 · 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 a mirror for the water cycle bowl? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the amount of water (c) the time of day (d) brightness of rainbow
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a mirror (d) yeast
4. 4.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) on top of the oil (c) in the water layer (d) in the oil layer
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a towel
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a magnet (c) water (d) turmeric powder
7. 7.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
9. 9.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a feather (c) a paper helicopter (d) a steel spoon
10. 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) yeast (c) a drinking straw (d) a balloon
11. 11.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) cold water (d) a magnet
13. 13.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
14. 14.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) give them to a baby (d) chew them
15. 15.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them
16. 16.True or false: a battery cell is needed for the density tower. (a) False (b) True
17. 17.🔮 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
18. 18.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a glass marble (c) a cork (d) an ice cube
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
20. 20.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) gardening shears (c) safety scissors (d) a paper cutter
22. 22.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) a clock or timer (d) two clear glasses
24. 24.🛟 Which of these sinks in water? (a) a ball of clay (b) a ping-pong ball (c) an empty capped bottle (d) an ice cube
25. 25.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
26. 26.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
28. 28.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) whether it floats (c) the shape of the clay
30. 30.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a sink or a bucket
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a magnet (c) a strip of paper (d) safety scissors
35. 35.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
36. 36.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) very salty water (b) honey (c) a ping-pong ball (d) a pebble
39. 39.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it turns blue (d) when it gets cold
40. 40.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) forward (d) it stays still

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