Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 847 · 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 magnet for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 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) a glass of water (d) a balloon
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a medicine dropper works by magnetism. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a compass needle
7. 7.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a suction hook (d) a drinking straw
9. 9.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump
11. 11.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🧺 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) a mirror (d) a glass of water
13. 13.🧺 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 sink or a bucket
14. 14.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
15. 15.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a magnet (d) a sink or a bucket
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) yeast (d) a sink or a bucket
19. 19.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
20. 20.⚖️ 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) the same card (c) how full the glass is
21. 21.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a suction hook
23. 23.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
24. 24.⚖️ 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 kept the same. (a) False (b) True
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 the one thing we change. (a) True (b) False
26. 26.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
28. 28.True or false: a stiff postcard is needed for the card-on-a-glass trick. (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 same glass is what we measure. (a) True (b) False
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a sink or a bucket
31. 31.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a vacuum cleaner (d) a compass needle
33. 33.⚖️ 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 same card (b) the same glass (c) whether the card stays (d) how full the glass is
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
39. 39.🔍 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 card stays on (c) the glass breaks (d) the card flies away
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a balloon

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