Air Pressure Experiment Worksheet

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

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