Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 580 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a mirror (d) a balloon
2. 2.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
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 medicine dropper (b) a bicycle pump (c) a magnetic pin holder (d) a drinking straw
5. 5.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
8. 8.🧺 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 mirror
9. 9.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a fridge magnet
11. 11.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a fridge magnet
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
15. 15.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
18. 18.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.⚖️ 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) True (b) False
21. 21.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a compass needle
25. 25.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic chess set
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a balloon (d) a sink or a bucket
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
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) False (b) True
30. 30.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
31. 31.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
32. 32.True or false: a drinking straw works by magnetism. (a) True (b) False
33. 33.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.⚖️ 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
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 same glass
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a towel
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.🔍 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

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