Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 676 · 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 — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the paper clip (c) time to reach the floor
2. 2.⚖️ 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 pouring is the one thing we change. (a) True (b) False
3. 3.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
4. 4.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) particles move faster (d) cold water is wet
5. 5.True or false: a toy parachute falls fast through the air. (a) True (b) False
6. 6.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) escaping air pushes it (c) the string pulls it (d) the straw is heavy
7. 7.🔍 Which is the odd one out? (a) a pebble (b) honey (c) an ice cube (d) a glass marble
8. 8.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a spoon (c) a battery cell (d) a tall clear glass
10. 10.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a tall clear glass (c) honey (d) cooking oil
12. 12.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
13. 13.True or false: dew on morning grass is melting. (a) True (b) False
14. 14.💧 Which of these is evaporation? (a) drops under a pot lid (b) ice becoming water (c) wet hair drying (d) dew on morning grass
15. 15.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) vapour in air cools (c) ice escapes the glass (d) the glass sweats
16. 16.📘 What does “dense” mean? (a) very thin (b) very colourful (c) very hot (d) heavy for its size
17. 17.True or false: a big bowl is needed for the water cycle bowl. (a) True (b) False
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a balloon
21. 21.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a piece of chalk (d) a sugar cube
22. 22.⚖️ 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) the slope of the string (d) how big we blow it
23. 23.True or false: a strip of cloth does not let water climb. (a) True (b) False
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a ruler (c) a strip of paper (d) a paper clip
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a battery cell (c) turmeric powder (d) cling film
27. 27.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) turmeric powder (d) a towel for spills
29. 29.True or false: a flower stem lets water climb up it. (a) False (b) True
30. 30.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) cooking oil (c) a tall clear glass (d) honey
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a small cup (c) yeast (d) ice cubes
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
34. 34.🧺 Which of these is needed for the density tower? (a) yeast (b) a magnet (c) a spoon (d) a mirror
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🔍 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
37. 37.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice-cream stick (c) a coin (d) an empty capped bottle
38. 38.True or false: cooking oil is less dense than water. (a) True (b) False
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of pouring (c) the same three liquids (d) the order of the layers
40. 40.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a balloon (c) turmeric powder (d) yeast

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