Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 832 · 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.🧺 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) a tub of water (d) a results table
2. 2.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the water temperature (d) the amount of water
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) the water temperature (c) time to dissolve
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) cling film (c) a small cup (d) turmeric powder
7. 7.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a sugar cube (d) a glass marble
8. 8.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) the crumpled ball (d) neither of them
9. 9.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) it turns to salt (d) the water increases
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) water with food colour (d) a magnet
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the kind of flower (c) the room it stands in (d) the length of the stem
16. 16.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a strip of paper (c) yeast (d) a pencil
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) yeast (c) a balloon (d) a towel for spills
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is the one thing we change. (a) False (b) True
20. 20.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
21. 21.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
22. 22.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
24. 24.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
25. 25.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a strip of cloth (d) a piece of chalk
26. 26.True or false: yeast is needed for the density tower. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a feather (b) a dry leaf (c) a piece of thermocol (d) a coin
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 same three liquids is kept the same. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) it has a magnet (d) its hollow shape
31. 31.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) keep it in a fridge (d) stir it more
32. 32.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a balloon (d) a mirror
34. 34.True or false: an ice cube sinks in water. (a) True (b) False
35. 35.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a mirror (c) a balloon (d) a strip of paper
36. 36.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
37. 37.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) vapour in air cools (c) the glass sweats (d) the glass leaks
38. 38.True or false: cooking oil dissolves in water. (a) False (b) True
39. 39.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True

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