Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 418 · 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 vacuum cleaner works by air pressure. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
3. 3.⚖️ 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 card (c) how full the glass is (d) whether the card stays
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.⚖️ 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 measure it (c) we change it
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
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 glass”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a stiff postcard
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a mirror
13. 13.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
14. 14.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a drinking straw
15. 15.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
17. 17.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic pin holder (d) a magnetic chess set
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) turmeric powder (d) a magnet
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a medicine dropper (d) a magnetic chess set
20. 20.🧺 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 towel (c) a battery cell (d) a stiff postcard
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a magnet (d) a glass of water
22. 22.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
24. 24.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
25. 25.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a towel
27. 27.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a stiff postcard
29. 29.⚖️ 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
30. 30.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a battery cell (d) a sink or a bucket
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
33. 33.⚖️ 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) how full the glass is (c) the same card
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a magnet (d) yeast
35. 35.True or false: a bicycle pump 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? True or false: how full the glass is is kept the same. (a) True (b) False
37. 37.⚖️ 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
38. 38.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
39. 39.⚖️ 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
40. 40.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False

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