Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 662 · 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? Which of these is what we measure? (a) the amount of water (b) the time we wait (c) the cling film cover (d) how many drops form
2. 2.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a magnet (c) cling film (d) turmeric powder
3. 3.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
4. 4.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a rubber eraser
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a piece of chalk (d) a flower stem
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
8. 8.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a magnet (d) warm water
9. 9.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) baking soda (d) table salt
10. 10.True or false: a spoon is not needed for the density tower. (a) True (b) False
11. 11.⚖️ 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 string
12. 12.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
13. 13.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
14. 14.⚖️ 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 person dropping (c) time to reach the floor
15. 15.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🔍 Which is the odd one out? (a) air (b) a ping-pong ball (c) an ice cube (d) a coin
18. 18.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) in the honey layer (d) under the honey
19. 19.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) it turns to ice (c) the water increases (d) some water evaporates
20. 20.True or false: an ice cube floats on water. (a) True (b) False
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) the length of the blades (c) the paper clip (d) time to reach the floor
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
24. 24.True or false: a big sugar cube dissolves faster. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
26. 26.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
28. 28.True or false: a bicycle pump works by air pressure. (a) True (b) False
29. 29.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) it has no weight (c) air pushes on its blades (d) a magnet holds it
30. 30.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
32. 32.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a small cup (c) a magnet (d) yeast
33. 33.🛟 Does a feather float or sink in water? (a) sinks (b) floats
34. 34.🛟 Which of these floats on water? (a) an iron nail (b) a coin (c) a steel spoon (d) an ice-cream stick
35. 35.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
36. 36.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
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 order of pouring is the one thing we change. (a) False (b) True
38. 38.⚖️ 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) False (b) True
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a piece of foil (d) a rubber eraser
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a sunny window (d) a clear glass of water

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