Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 820 · 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 shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
2. 2.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) sticky tape (d) a mirror
4. 4.⚖️ 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 window (b) the same glass (c) brightness of rainbow (d) the time of day
5. 5.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
6. 6.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.💧 Which change is this: making ice lollies? (a) melting (b) condensation (c) evaporation (d) freezing
14. 14.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it flies upward (d) it spins round
15. 15.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
16. 16.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) leave them wet (d) slide on them
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) a balloon
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) a balloon (d) a magnet
19. 19.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the balloon (d) gas from the rocket
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
21. 21.True or false: yeast is not needed for the paper helicopter. (a) False (b) True
22. 22.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is needed for the density tower? (a) a mirror (b) a battery cell (c) honey (d) turmeric powder
24. 24.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
25. 25.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) sticky tape (d) turmeric powder
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) sunlight (d) a magnet
27. 27.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
28. 28.⚖️ 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 the layers is the one thing we change. (a) True (b) False
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
30. 30.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
34. 34.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) gardening shears (d) a paper cutter
35. 35.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
36. 36.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
37. 37.True or false: gas from the rocket goes forward. (a) False (b) True
38. 38.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
39. 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
40. 40.🔍 Which is the odd one out? (a) a piece of thermocol (b) a pebble (c) a coin (d) a glass marble

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