Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 918 · 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.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
2. 2.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
3. 3.⚖️ 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 what we measure. (a) True (b) False
4. 4.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
5. 5.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) air from the balloon (d) the rowing boat
6. 6.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it vanished for ever (d) it became air
7. 7.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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 tub of water (d) whether it floats
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🥄 Which of these dissolves in water? (a) cooking oil (b) sand (c) glucose powder (d) sawdust
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) distance it travels (c) how big we blow it (d) the same string
13. 13.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a tub of water (d) a battery cell
15. 15.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
16. 16.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a paper towel (d) a rubber eraser
17. 17.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) a coin (d) honey
19. 19.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
20. 20.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
21. 21.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a balloon (d) a tub of water
23. 23.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) cotton wool (d) two clear glasses
24. 24.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) warm water (c) a clock or timer (d) honey
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) food colour (d) turmeric powder
26. 26.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) drops on a cold glass (b) water becoming ice (c) a pond icing over (d) making ice lollies
28. 28.⚖️ 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 what we measure. (a) True (b) False
29. 29.True or false: a long string is needed for the balloon rocket. (a) False (b) True
30. 30.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
32. 32.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
33. 33.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: the swimmer goes backward. (a) False (b) True
36. 36.⚖️ 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 kept the same. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) an open sheet of paper (b) a fluff of cotton (c) a toy parachute (d) a crumpled paper ball
38. 38.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a long string (c) two chairs (d) a drinking straw
40. 40.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) a metal key (d) an ice cube

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