Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 523 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) the way we turn it (c) how full the glass is (d) the same glass
3. 3.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a bicycle pump
4. 4.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.True or false: a drinking straw works by magnetism. (a) True (b) False
6. 6.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
7. 7.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
8. 8.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a drinking straw (d) a suction hook
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
10. 10.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a compass needle (d) a suction hook
11. 11.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) True (b) False
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a sink or a bucket (d) a glass of water
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
15. 15.True or false: a magnetic chess set works by magnetism. (a) False (b) True
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
17. 17.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a balloon (d) yeast
24. 24.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) the same card (c) whether the card stays (d) how full the glass is
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a sink or a bucket
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
29. 29.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the glass breaks (d) the water turns to ice
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
37. 37.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.True or false: a suction hook works by air pressure. (a) False (b) True
39. 39.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water

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