Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 906 · 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.🌈 In VIBGYOR, what number colour is orange?
2. 2.⚖️ 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 keep it the same (c) we measure it
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) cling film (c) a big bowl (d) sunlight
5. 5.True or false: a dry leaf sinks in water. (a) True (b) False
6. 6.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a mirror
8. 8.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
9. 9.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a mirror (d) a results table
13. 13.🧺 Which of these is not needed for the paper helicopter? (a) a mirror (b) safety scissors (c) a paper clip (d) a ruler
14. 14.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a fluff of cotton (b) a stone (c) a glass marble (d) a crumpled paper ball
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
18. 18.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
19. 19.True or false: a ball of clay sinks in water. (a) False (b) True
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
21. 21.True or false: small pebbles dissolves in water. (a) True (b) False
22. 22.🧺 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 sink or a bucket (d) a towel
23. 23.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a drinking straw (c) turmeric powder (d) a magnet
25. 25.True or false: sugar left unstirred dissolves faster. (a) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a piece of chalk
27. 27.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
28. 28.🔍 Which is the odd one out? (a) wet hair drying (b) drops under a pot lid (c) wet clothes drying (d) a puddle drying up
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
30. 30.💧 Which of these does not let water climb? (a) a piece of chalk (b) a piece of foil (c) a strip of cloth (d) a cotton thread
31. 31.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) a sunny window
33. 33.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a drinking straw (c) two chairs (d) sticky tape
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) magnetism (d) reflection
37. 37.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
38. 38.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
39. 39.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
40. 40.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes

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