Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 657 · 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 towel is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a suction hook works by air pressure. (a) False (b) True
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a balloon (d) a stiff postcard
5. 5.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.True or false: a suction hook works by magnetism. (a) True (b) False
7. 7.🧺 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 mirror
8. 8.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 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 stiff postcard
10. 10.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
12. 12.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.⚖️ 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) True (b) False
15. 15.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic chess set (d) a fridge magnet
16. 16.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
18. 18.🧺 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) yeast (d) a sink or a bucket
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a suction hook
22. 22.🛟 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 hotter (d) it is heavier
23. 23.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a magnetic pin holder
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a battery cell (d) a towel
25. 25.True or false: a drinking straw works by air pressure. (a) False (b) True
26. 26.🔍 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
27. 27.⚖️ 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) whether the card stays (c) the same glass (d) the same card
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.True or false: a compass needle works by air pressure. (a) False (b) True
30. 30.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
31. 31.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ 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 change it (c) we measure it
33. 33.True or false: a medicine dropper works by magnetism. (a) False (b) True
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a towel (d) a balloon
35. 35.⚖️ 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) the same glass (c) the same card (d) how full the glass is
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.True or false: a compass needle works by magnetism. (a) False (b) True
38. 38.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner

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