Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 904 · 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.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic pin holder
2. 2.🔍 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 water turns to ice (c) the card stays on (d) the glass breaks
3. 3.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a medicine dropper (d) a compass needle
4. 4.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a glass of water (d) a sink or a bucket
7. 7.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
8. 8.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
9. 9.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a compass needle
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) air inside pushes back (d) the bottle is magnetic
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
14. 14.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.⚖️ 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) True (b) False
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a battery cell (d) a mirror
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
18. 18.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.⚖️ 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) False (b) True
20. 20.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.True or false: a suction hook works by magnetism. (a) True (b) False
22. 22.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a medicine dropper
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a compass needle
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a magnetic pin holder (d) a fridge magnet
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.⚖️ 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
32. 32.🧺 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 mirror (d) a glass of water
33. 33.True or false: a magnetic chess set works by magnetism. (a) False (b) True
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
35. 35.True or false: a compass needle works by magnetism. (a) False (b) True
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 keep it the same (c) we change it
37. 37.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic pin holder
38. 38.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a vacuum cleaner (d) a bicycle pump
39. 39.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
40. 40.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False

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