Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 512 · 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 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) how full the glass is (c) whether the card stays
2. 2.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a medicine dropper (d) a bicycle pump
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a results table (d) a magnet
4. 4.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🛟 Which of these sinks in water? (a) a dry leaf (b) a piece of thermocol (c) an iron nail (d) an ice cube
7. 7.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a sugar cube
9. 9.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
10. 10.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
11. 11.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
12. 12.🍯 Which of these is less dense than water? (a) a ping-pong ball (b) very salty water (c) honey (d) a pebble
13. 13.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it still floats (d) it turns white
14. 14.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
15. 15.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
16. 16.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
17. 17.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it gets too heavy (d) it turns into a kite
18. 18.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
19. 19.True or false: water is needed for the water cycle bowl. (a) False (b) True
20. 20.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
22. 22.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a clear glass of water (d) a mirror
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
24. 24.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) a big sugar cube (d) sugar stirred well
25. 25.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
26. 26.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) a feather (d) a glass marble
27. 27.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
28. 28.🧺 Do we need a mirror for the water cycle bowl? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a magnet (c) a strip of paper (d) a paper clip
30. 30.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the honey layer (d) in the water layer
31. 31.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) gravity (c) air pressure (d) the wind
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a few hours of waiting (d) food colour
33. 33.💧 Which of these is condensation? (a) ice becoming water (b) water becoming ice (c) sweat drying on skin (d) a misty bathroom mirror
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) vinegar (c) sticky tape (d) a long string
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
36. 36.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
38. 38.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the density tower? (a) yeast (b) a balloon (c) a magnet (d) cooking oil
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a mirror (c) water with food colour (d) honey

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