Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 814 · 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.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🥛 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
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
4. 4.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a drinking straw (d) a suction hook
5. 5.True or false: a compass needle works by magnetism. (a) False (b) True
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 towel (d) yeast
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a towel (d) a magnet
8. 8.⚖️ 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) how full the glass is (c) the same glass (d) whether the card stays
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same glass
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a glass of water (d) yeast
11. 11.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a fridge magnet
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
13. 13.⚖️ 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
14. 14.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
15. 15.⚖️ 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
16. 16.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.True or false: a suction hook works by air pressure. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a magnet (d) yeast
21. 21.🧺 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 magnet (d) a sink or a bucket
22. 22.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
24. 24.True or false: a magnetic chess set works by magnetism. (a) False (b) True
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a mirror (d) a sink or a bucket
26. 26.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a vacuum cleaner
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
28. 28.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) turmeric powder (d) a glass of water
30. 30.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a towel (d) a glass of water
34. 34.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
35. 35.True or false: a stiff postcard is needed for the card-on-a-glass trick. (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: the same glass is the one thing we change. (a) True (b) False
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a fridge magnet
38. 38.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 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 towel (d) a mirror
40. 40.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False

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