Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 982 · 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.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
2. 2.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) a paper cutter (d) sharp kitchen shears
3. 3.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.True or false: a feather falls slowly through the air. (a) False (b) True
5. 5.💧 Which of these lets water climb up it? (a) a flower stem (b) a steel spoon (c) a glass marble (d) a rubber eraser
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🚁 Which of these falls slowly through the air? (a) a coin (b) a feather (c) a stone (d) a crumpled paper ball
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
10. 10.True or false: a glass marble floats on water. (a) True (b) False
11. 11.True or false: sugar does not dissolve in water. (a) True (b) False
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.💧 Which change is this: drops on a cold glass? (a) evaporation (b) condensation (c) melting (d) freezing
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a towel for spills
15. 15.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a battery cell (d) a tub of water
17. 17.🥄 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) food colour (d) sawdust
18. 18.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
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 order of pouring is the one thing we change. (a) False (b) True
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
22. 22.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass leaks (c) the glass sweats (d) ice escapes the glass
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a battery cell (d) a clear glass of water
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
25. 25.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
26. 26.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
27. 27.True or false: cooking oil is denser than water. (a) False (b) True
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the stirring
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) safety scissors (c) a strip of paper (d) a pencil
32. 32.True or false: a glass marble falls slowly through the air. (a) True (b) False
33. 33.💧 Which of these is melting? (a) a puddle drying up (b) drops under a pot lid (c) drops on a cold glass (d) butter going runny
34. 34.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the paper helicopter? (a) turmeric powder (b) a paper clip (c) a ruler (d) a strip of paper
36. 36.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) wet hair drying (b) a puddle drying up (c) sweat drying on skin (d) water becoming ice
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) a clear glass of water
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats

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