Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 118 · 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 a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) a mirror (d) cotton wool
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
5. 5.True or false: baking soda does not dissolve in water. (a) True (b) False
6. 6.💧 Which of these is freezing? (a) sweat drying on skin (b) drops on a cold glass (c) making ice lollies (d) a misty bathroom mirror
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) a balloon (d) sugar
8. 8.🔍 Which is the odd one out? (a) a ping-pong ball (b) honey (c) cooking oil (d) air
9. 9.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
13. 13.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
14. 14.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
16. 16.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
17. 17.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a magnet (d) a towel for spills
19. 19.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil attracts magnets (d) oil turns into honey
20. 20.🔍 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 became air (d) it vanished for ever
21. 21.True or false: a big bowl is not needed for the water cycle bowl. (a) True (b) False
22. 22.⚖️ 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 glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
24. 24.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) baking soda (d) sugar
25. 25.🔍 Which is the odd one out? (a) a cork (b) air (c) an ice cube (d) a coin
26. 26.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a toy parachute (b) a feather (c) an open sheet of paper (d) a stone
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sheet of white paper
29. 29.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it spins round (c) it stays still in air (d) it flies upward
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
33. 33.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to salt (d) it turns to ice
34. 34.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
36. 36.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
37. 37.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
38. 38.⚖️ 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 the layers is the one thing we change. (a) False (b) True
39. 39.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a paper towel (d) a piece of foil
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the length of the blades (c) the drop height (d) the kind of paper

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