Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 313 · 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 turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
4. 4.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a fridge magnet (d) a vacuum cleaner
5. 5.⚖️ 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
6. 6.🧺 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) turmeric powder (d) a towel
7. 7.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the glass breaks (d) the card stays on
8. 8.True or false: a compass needle works by air pressure. (a) True (b) False
9. 9.⚖️ 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 same glass (c) whether the card stays
10. 10.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
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 towel (c) a magnet (d) a stiff postcard
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 what we measure. (a) True (b) False
14. 14.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
15. 15.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a suction hook
17. 17.True or false: a magnetic chess set works by air pressure. (a) True (b) False
18. 18.🧺 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 balloon (d) a glass of water
19. 19.True or false: a fridge magnet works by air pressure. (a) False (b) True
20. 20.🧺 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 battery cell (d) a sink or a bucket
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a vacuum cleaner
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a battery cell
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a balloon (d) a mirror
24. 24.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a magnet (d) a stiff postcard
26. 26.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
28. 28.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.⚖️ 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) whether the card stays (b) the way we turn it (c) the same card (d) the same glass
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) a balloon
32. 32.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) friction (d) sunlight
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a balloon (d) a sink or a bucket
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
36. 36.⚖️ 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) whether the card stays (d) the same glass
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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
39. 39.True or false: a drinking straw works by air pressure. (a) True (b) False
40. 40.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True

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