Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 977 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
2. 2.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a magnet (c) a stiff postcard (d) a towel
11. 11.True or false: a bicycle pump works by magnetism. (a) True (b) False
12. 12.True or false: a magnetic chess set works by magnetism. (a) False (b) True
13. 13.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.True or false: a fridge magnet works by air pressure. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a compass needle (d) a magnetic pin holder
16. 16.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
19. 19.⚖️ 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
20. 20.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic chess set
21. 21.True or false: a fridge magnet works by magnetism. (a) False (b) True
22. 22.⚖️ 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 way we turn it (c) how full the glass is
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a mirror
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.True or false: a bicycle pump works by air pressure. (a) True (b) False
27. 27.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
28. 28.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.⚖️ 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) True (b) False
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a drinking straw (d) a medicine dropper
38. 38.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
39. 39.⚖️ 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 card (c) the way we turn it (d) the same glass
40. 40.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier

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