Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 830 · 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 yeast for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.True or false: a fridge magnet works by magnetism. (a) False (b) True
7. 7.⚖️ 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
8. 8.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
9. 9.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
12. 12.⚖️ 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 the one thing we change. (a) False (b) True
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
14. 14.🧺 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 battery cell
15. 15.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a mirror (d) a sink or a bucket
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) turmeric powder
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) turmeric powder
22. 22.True or false: a magnetic chess set works by magnetism. (a) False (b) True
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.🧺 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) yeast (d) a glass of water
25. 25.⚖️ 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) True (b) False
26. 26.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
27. 27.⚖️ 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 same glass (c) the way we turn it (d) the same card
28. 28.True or false: a compass needle works by air pressure. (a) True (b) False
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 the one thing we change. (a) True (b) False
30. 30.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a mirror (d) a glass of water
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
35. 35.⚖️ 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 change it (b) we keep it the same (c) we measure it
36. 36.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
37. 37.⚖️ 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 way we turn it
38. 38.True or false: a medicine dropper works by air pressure. (a) False (b) True
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True

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