Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 824 · 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.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a ruler (c) a magnet (d) yeast
2. 2.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) red (d) yellow
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the kind of flower (c) the amount of water (d) time for colour to show
4. 4.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.⚖️ 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) the same tape (c) distance it travels
6. 6.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the water turns red (d) the bowl freezes
7. 7.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) blow it till it bursts (d) put string round a neck
8. 8.🚁 Which of these falls fast through the air? (a) a steel spoon (b) an open sheet of paper (c) a paper helicopter (d) a fluff of cotton
9. 9.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a fluff of cotton (c) a toy parachute (d) a feather
11. 11.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) food colour
13. 13.🔍 Which is the odd one out? (a) a paper helicopter (b) a fluff of cotton (c) an open sheet of paper (d) a glass marble
14. 14.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a clock or timer (c) honey (d) a magnet
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) a spoon (c) honey (d) a tall clear glass
16. 16.🔍 Which is the odd one out? (a) a coin (b) a paper helicopter (c) a steel spoon (d) a stone
17. 17.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) taste each layer (d) throw the glass
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
19. 19.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) coloured water (c) honey (d) the spoon
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) time to reach the floor (c) the person dropping (d) the length of the blades
22. 22.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a paper clip (c) a balloon (d) a ruler
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.⚖️ 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 what we measure. (a) False (b) True
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a balloon (c) a strip of paper (d) safety scissors
26. 26.🧺 Which of these is needed for the density tower? (a) yeast (b) a balloon (c) a tall clear glass (d) a mirror
27. 27.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to smoke (d) it turns to salt
28. 28.🔍 Which is the odd one out? (a) an ice cube (b) air (c) cooking oil (d) honey
29. 29.True or false: a piece of chalk does not let water climb. (a) True (b) False
30. 30.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
31. 31.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) cotton wool (d) sugar
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) turmeric powder
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) food colour
36. 36.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) a sunny window
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) turmeric powder (c) a magnet (d) a mirror
40. 40.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward

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