Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 115 · 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.⚖️ 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
2. 2.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a stiff postcard (d) a glass of water
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a mirror (d) a towel
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a towel (d) a balloon
10. 10.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
11. 11.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a medicine dropper
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 the one thing we change. (a) False (b) True
13. 13.🧺 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 glass of water (d) a battery cell
14. 14.⚖️ 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
15. 15.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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
18. 18.True or false: a compass needle works by air pressure. (a) False (b) True
19. 19.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
20. 20.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
21. 21.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🔍 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 glass breaks (c) the card flies away (d) the water turns to ice
23. 23.🛟 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
24. 24.⚖️ 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) the same glass (c) how full the glass is
25. 25.True or false: a suction hook works by magnetism. (a) False (b) True
26. 26.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
28. 28.⚖️ 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
29. 29.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
35. 35.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a compass needle (d) a suction hook
36. 36.True or false: a magnetic chess set works by air pressure. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ 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 glass (b) the way we turn it (c) how full the glass is (d) the same card
39. 39.🥛 Which of these works by magnetism? (a) a compass needle (b) a suction hook (c) a vacuum cleaner (d) a drinking straw
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) yeast (d) a mirror

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