Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 850 · 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 is not needed for the water cycle bowl? (a) cling film (b) water (c) turmeric powder (d) ice cubes
2. 2.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
3. 3.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
5. 5.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) wind (c) lightning (d) sunshine
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
7. 7.🌈 In VIBGYOR, what number colour is red?
8. 8.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a small cup (c) cling film (d) a mirror
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) how much of each liquid (c) the order of the layers (d) the order of pouring
10. 10.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
11. 11.True or false: a dry leaf sinks in water. (a) True (b) False
12. 12.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
13. 13.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
15. 15.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) sharp kitchen shears (d) safety scissors
16. 16.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) cooking oil (c) the spoon (d) honey
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: a glass marble sinks in water. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a glass marble (d) a sugar cube
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
25. 25.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water can scald (c) it changes colour (d) hot water is magnetic
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) sea water is warm (d) its hollow shape
28. 28.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) a magnet (d) the cold water
29. 29.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a battery cell (d) a towel for spills
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
32. 32.True or false: safety scissors is not needed for the paper helicopter. (a) False (b) True
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) True (b) False
34. 34.🧺 Which of these is needed for the density tower? (a) a magnet (b) yeast (c) a mirror (d) honey
35. 35.True or false: a metal key sinks in water. (a) False (b) True
36. 36.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it floats away (d) it turns brighter
37. 37.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) table salt (d) chalk powder
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the room it stands in (c) time for colour to show (d) the amount of water
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of sugar (c) the water temperature (d) the kind of sugar
40. 40.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk

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