Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 974 · 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.🥄 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) small pebbles (d) food colour
2. 2.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) sand (d) glucose powder
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
5. 5.🚀 Which of these goes forward? (a) the swimmer (b) gas from the rocket (c) air from the balloon (d) water from the oars
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
9. 9.🌈 In VIBGYOR, what number colour is red?
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
11. 11.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) pour it on the floor (d) do not lick the spoon
12. 12.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
13. 13.🔍 Which is the odd one out? (a) a pond icing over (b) a misty bathroom mirror (c) dew on morning grass (d) drops on a cold glass
14. 14.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) yeast (c) turmeric powder (d) a pencil
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a magnet
16. 16.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the amount of water (c) the same window (d) the time of day
20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a strip of cloth (d) a glass marble
21. 21.True or false: a compass needle works by magnetism. (a) False (b) True
22. 22.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
26. 26.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
28. 28.📘 What is the push of air on a falling thing called? (a) floating (b) magnetism (c) air resistance (d) dissolving
29. 29.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) True (b) False
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) how full the glass is (c) whether the card stays (d) the same glass
34. 34.True or false: sweat drying on skin is evaporation. (a) False (b) True
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) a ping-pong ball (d) a glass marble
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a balloon (d) turmeric powder
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
40. 40.True or false: a strip of cloth does not let water climb. (a) True (b) False

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