Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 537 · 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 bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) False (b) True
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
3. 3.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a magnet (c) a pencil (d) a battery cell
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
5. 5.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a mirror (c) cling film (d) a balloon
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) a balloon (d) sticky tape
8. 8.🚁 Which of these falls fast through the air? (a) a glass marble (b) a paper helicopter (c) a fluff of cotton (d) an open sheet of paper
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
10. 10.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) the bowl freezes (d) more drops form
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) a towel for spills (d) small test objects
12. 12.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
13. 13.True or false: a comb is needed for the dissolving test. (a) False (b) True
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
15. 15.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
16. 16.🔍 Which is the odd one out? (a) snow turning to water (b) drops on a cold glass (c) butter going runny (d) ice becoming water
17. 17.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
18. 18.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
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 same glass is what we measure. (a) False (b) True
20. 20.💧 Which change is this: making ice lollies? (a) melting (b) evaporation (c) freezing (d) condensation
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a teaspoon (c) sugar (d) cold water
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
24. 24.True or false: a pencil is not needed for the paper helicopter. (a) True (b) False
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the time of day (c) the amount of water (d) the same white paper
26. 26.🔍 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
27. 27.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
28. 28.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
29. 29.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a magnet (c) a balloon (d) yeast
30. 30.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) all of it dissolves (d) the sugar turns to salt
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
32. 32.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to smoke (c) it turns to salt (d) it turns to drops
33. 33.True or false: dew on morning grass is melting. (a) False (b) True
34. 34.True or false: a rubber eraser does not let water climb. (a) False (b) True
35. 35.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a cotton thread
37. 37.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a magnet (c) a ruler (d) turmeric powder
38. 38.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
39. 39.True or false: an iron nail floats on water. (a) True (b) False
40. 40.💧 Which change is this: drops on a cold glass? (a) condensation (b) freezing (c) melting (d) evaporation

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