Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 267 · 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.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same glass
2. 2.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an iron nail (c) a cork (d) a feather
3. 3.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🍯 Which of these is denser than water? (a) a ping-pong ball (b) cooking oil (c) an ice cube (d) a pebble
5. 5.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a solution (c) a crystal (d) a rainbow
6. 6.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) spilled oil is slippery (d) oil turns into honey
7. 7.🔍 Which is the odd one out? (a) wet clothes drying (b) a puddle drying up (c) sweat drying on skin (d) a misty bathroom mirror
8. 8.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a paper helicopter (c) a crumpled paper ball (d) an open sheet of paper
9. 9.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) bubbles of gas (d) three separate layers
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 “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a few hours of waiting
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) False (b) True
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
15. 15.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) sugar (d) a balloon
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a sink or a bucket (d) a glass of water
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a plastic ruler (c) a piece of chalk (d) a sugar cube
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) whether the card stays (c) how full the glass is (d) the same glass
19. 19.True or false: sugar stirred well dissolves faster. (a) False (b) True
20. 20.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same straw (c) distance it travels (d) how big we blow it
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.True or false: a cork sinks in water. (a) True (b) False
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
25. 25.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a mirror (d) a pencil
26. 26.⚖️ 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 order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
28. 28.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
29. 29.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) the straw is heavy (d) escaping air pushes it
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.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) turmeric powder (d) yeast
32. 32.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
33. 33.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
35. 35.True or false: honey is needed for the density tower. (a) False (b) True
36. 36.True or false: a comb is not needed for the dissolving test. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) yeast
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🔍 Which is the odd one out? (a) an ice cube (b) a piece of thermocol (c) a glass marble (d) an ice-cream stick

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