Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 406 · 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 works by magnetism? (a) a compass needle (b) a suction hook (c) a drinking straw (d) a medicine dropper
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a balloon (d) a glass of water
4. 4.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) table salt (d) sugar
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
7. 7.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a mirror (c) a glass of water (d) a stiff postcard
9. 9.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) two chairs (d) vinegar
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
12. 12.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to smoke (c) it turns to drops (d) it turns to salt
13. 13.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
14. 14.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) honey (d) a balloon
15. 15.True or false: a mirror is needed for the paper helicopter. (a) True (b) False
16. 16.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
17. 17.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it bounces up (d) it sinks
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
20. 20.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) sticky tape (d) a magnet
21. 21.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
22. 22.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
23. 23.⚖️ 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 amount of water (b) the same window (c) the same glass (d) the same white paper
24. 24.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same tape (d) the same straw
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
28. 28.True or false: an ice-cream stick floats on water. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the room it stands in
30. 30.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) a mirror (d) a drinking straw
31. 31.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a results table (d) a tub of water
33. 33.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) safety scissors (c) a ruler (d) a pencil
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) turmeric powder (d) a battery cell
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a balloon (d) a sunny window
36. 36.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
37. 37.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
39. 39.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) cold water is wet (c) particles move faster (d) warm water is thicker
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a cotton thread (d) a flower stem

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