Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 800 · 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 battery cell is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a mirror (d) a towel
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
4. 4.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a drinking straw (d) a medicine dropper
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
6. 6.🧺 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 balloon (d) a towel
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.⚖️ 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
10. 10.🔍 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
11. 11.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
12. 12.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a suction hook (d) a bicycle pump
13. 13.🧺 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 stiff postcard (c) a magnet (d) a towel
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a mirror (d) yeast
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a balloon (d) a glass of water
17. 17.⚖️ 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
18. 18.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
19. 19.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
21. 21.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
29. 29.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.⚖️ 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) whether the card stays (c) the same card (d) how full the glass is
32. 32.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
34. 34.🧺 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 stiff postcard (d) a glass of water
35. 35.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a battery cell (d) a mirror
37. 37.⚖️ 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) False (b) True
38. 38.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True

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