Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 205 · 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.🥛 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
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
3. 3.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a magnetic chess set
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
5. 5.True or false: a glass of water 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
8. 8.⚖️ 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
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) yeast
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
12. 12.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic pin holder
13. 13.⚖️ 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 card (b) how full the glass is (c) whether the card stays
14. 14.⚖️ 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 glass (c) whether the card stays (d) the way we turn it
15. 15.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
16. 16.⚖️ 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 what we measure. (a) False (b) True
17. 17.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
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 what we measure. (a) True (b) False
20. 20.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
22. 22.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
24. 24.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a compass needle (d) a magnetic pin holder
25. 25.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a glass of water
27. 27.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
28. 28.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
30. 30.🧺 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
31. 31.⚖️ 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 what we measure. (a) False (b) True
32. 32.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a sink or a bucket
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a mirror
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a magnetic chess set
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a sink or a bucket (d) a balloon
40. 40.⚖️ 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

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