Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 660 · 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.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
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? Which of these is the one thing we change? (a) whether the card stays (b) the same card (c) how full the glass is (d) the same glass
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
6. 6.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
12. 12.True or false: a fridge magnet works by magnetism. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a compass needle
14. 14.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.⚖️ 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 same glass (d) the same card
16. 16.🔮 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
17. 17.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
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 mirror (c) a glass of water (d) a stiff postcard
19. 19.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
20. 20.True or false: a suction hook works by air pressure. (a) False (b) True
21. 21.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
22. 22.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
23. 23.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
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.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
26. 26.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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) False (b) True
29. 29.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a towel (d) a glass of water
31. 31.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
32. 32.🧺 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
33. 33.🔍 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
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a balloon (d) a towel
37. 37.True or false: a drinking straw works by magnetism. (a) False (b) True
38. 38.🧺 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 glass of water (d) a towel
39. 39.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False

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