Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 151 · 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 evaporation? (a) making ice lollies (b) wet clothes drying (c) a pond icing over (d) drops on a cold glass
2. 2.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
3. 3.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the rowing boat (d) the swimmer
4. 4.🔍 Which is the odd one out? (a) a piece of thermocol (b) a ping-pong ball (c) a metal key (d) an ice cube
5. 5.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a fridge magnet
6. 6.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the same three liquids (c) the order of the layers
8. 8.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
9. 9.🔍 Which is the odd one out? (a) a cork (b) a piece of thermocol (c) a pebble (d) an ice cube
10. 10.📘 What does “dense” mean? (a) very thin (b) heavy for its size (c) very colourful (d) very hot
11. 11.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
12. 12.True or false: a pond icing over is condensation. (a) False (b) True
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same tape
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
15. 15.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a bicycle pump (d) a vacuum cleaner
16. 16.True or false: ice cubes is needed for the water cycle bowl. (a) False (b) True
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a paper clip (c) a strip of paper (d) yeast
18. 18.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) a spoon (d) turmeric powder
19. 19.True or false: a coin is denser than water. (a) True (b) False
20. 20.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a magnet (d) a clear glass of water
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.True or false: turmeric powder is needed for the density tower. (a) False (b) True
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) yeast
24. 24.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) neither of them (d) the small pebble
25. 25.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
26. 26.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they mix for ever (d) they separate again
27. 27.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
30. 30.⚖️ 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 order of pouring (b) the order of the layers (c) the same glass (d) how much of each liquid
31. 31.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a bicycle pump (d) a suction hook
32. 32.🧺 Which of these is needed for the density tower? (a) yeast (b) turmeric powder (c) a balloon (d) water with food colour
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) the amount of water (c) the time we wait (d) sun or shade
34. 34.⚖️ 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 “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) a long string (d) a magnet
36. 36.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🧺 Which of these is needed for the paper helicopter? (a) a pencil (b) a magnet (c) a balloon (d) a mirror
40. 40.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card

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