Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 472 · 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.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
2. 2.True or false: water from the oars goes forward. (a) True (b) False
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) small test objects (d) a results table
5. 5.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) a big sugar cube
6. 6.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
8. 8.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
9. 9.🍯 Which of these is denser than water? (a) a cork (b) cooking oil (c) a ping-pong ball (d) honey
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
11. 11.True or false: a paper towel lets water climb up it. (a) True (b) False
12. 12.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) a balloon (d) cling film
13. 13.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it dissolves (d) it sinks
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the room it stands in
15. 15.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a stiff postcard (d) a mirror
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a mirror
19. 19.⚖️ 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 amount of sugar (c) the stirring (d) the amount of water
20. 20.🔍 Which is the odd one out? (a) dew on morning grass (b) drops on a cold glass (c) sweat drying on skin (d) a misty bathroom mirror
21. 21.🔮 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 sugar turns to salt (d) the water turns solid
22. 22.True or false: an ice cube is denser than water. (a) True (b) False
23. 23.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) more drops form (d) the bowl freezes
25. 25.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) a steel spoon (d) an empty capped bottle
26. 26.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
28. 28.True or false: sugar dissolves in water. (a) True (b) False
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
30. 30.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) air from the balloon (d) the swimmer
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
32. 32.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
34. 34.True or false: a balloon is needed for the water rainbow. (a) False (b) True
35. 35.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil turns into honey (d) oil attracts magnets
36. 36.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) a drinking straw (d) vinegar
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the water temperature (c) the amount of sugar (d) time to dissolve
39. 39.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it turns blue (c) it falls upward (d) it does not fall

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