Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 628 · 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.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a fridge magnet (d) a suction hook
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
4. 4.⚖️ 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 the one thing we change. (a) False (b) True
5. 5.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
7. 7.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the way we turn it
8. 8.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a medicine dropper
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a glass of water
12. 12.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
14. 14.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) turmeric powder
16. 16.⚖️ 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 same card (b) how full the glass is (c) the same glass (d) whether the card stays
17. 17.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a magnetic chess set
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a battery cell (d) a magnet
19. 19.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 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
21. 21.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
22. 22.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
23. 23.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
25. 25.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) yeast (d) a stiff postcard
27. 27.🧺 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 sink or a bucket (d) a balloon
28. 28.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a magnetic chess set (d) a compass needle
29. 29.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
30. 30.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a bicycle pump (d) a suction hook
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the way we turn it
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
37. 37.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.⚖️ 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 kept the same. (a) True (b) False

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