Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 578 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
2. 2.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
3. 3.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
4. 4.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) the water temperature (c) time to dissolve
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) the drop height (c) the kind of paper (d) time to reach the floor
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) water (c) turmeric powder (d) a balloon
8. 8.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the bowl freezes (d) the water turns red
9. 9.True or false: yeast is needed for the balloon rocket. (a) True (b) False
10. 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a drinking straw (d) a battery cell
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
12. 12.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
13. 13.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
14. 14.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the tub (d) the cork itself
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a paper clip (d) a mirror
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) a tall clear glass (c) honey (d) a spoon
17. 17.🧺 Do we need honey for the density tower? (a) not needed (b) needed
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the same window (d) the amount of water
19. 19.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) keep it away from faces (c) aim it at your friend (d) put string round a neck
20. 20.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) gravity (c) magnetism (d) air pressure
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🥄 Which of these dissolves in water? (a) small pebbles (b) sand (c) food colour (d) chalk powder
23. 23.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
25. 25.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
26. 26.💧 Which change is this: drops under a pot lid? (a) melting (b) freezing (c) evaporation (d) condensation
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is kept the same. (a) False (b) True
28. 28.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
29. 29.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a towel (d) a stiff postcard
31. 31.True or false: a steel spoon lets water climb up it. (a) True (b) False
32. 32.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
33. 33.True or false: cooking oil is not needed for the density tower. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) an ice cube (b) air (c) a coin (d) cooking oil
35. 35.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
36. 36.🛟 Which of these floats on water? (a) a coin (b) an ice-cream stick (c) a glass marble (d) a pebble
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a few hours of waiting (d) a balloon
38. 38.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) it has no weight (c) air pushes on its blades (d) the floor pushes it
39. 39.True or false: wet clothes drying is evaporation. (a) False (b) True
40. 40.True or false: a feather floats on water. (a) True (b) False

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