Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 240 · 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.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic pin holder (c) a suction hook (d) a vacuum cleaner
5. 5.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
6. 6.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
7. 7.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
8. 8.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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) the way we turn it (d) whether the card stays
12. 12.⚖️ 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
13. 13.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a mirror (d) yeast
15. 15.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
16. 16.🧺 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 balloon (c) a stiff postcard (d) a towel
17. 17.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
20. 20.🧺 Do we need a sink or a bucket 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? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) yeast (d) a mirror
25. 25.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a towel
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
28. 28.⚖️ 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
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a compass needle
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
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 the one thing we change. (a) False (b) True
32. 32.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a mirror
36. 36.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
38. 38.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
39. 39.🧺 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 towel (d) a balloon
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed

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