Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 863 · 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.⚖️ 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 way we turn it (b) the same card (c) how full the glass is (d) the same glass
2. 2.True or false: a compass needle works by magnetism. (a) False (b) True
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
5. 5.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a magnet
7. 7.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.True or false: a magnetic chess set works by magnetism. (a) True (b) False
9. 9.True or false: a compass needle works by air pressure. (a) True (b) False
10. 10.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a battery cell (d) a sink or a bucket
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a medicine dropper (d) a bicycle pump
16. 16.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
17. 17.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
18. 18.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
20. 20.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
21. 21.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
22. 22.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
24. 24.True or false: a bicycle pump works by air pressure. (a) True (b) False
25. 25.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a sink or a bucket (d) a mirror
27. 27.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
28. 28.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
30. 30.🔍 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 glass breaks (c) the card stays on (d) the water turns to ice
31. 31.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
32. 32.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a drinking straw (d) a vacuum cleaner
33. 33.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
35. 35.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.⚖️ 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
37. 37.True or false: yeast is needed for the card-on-a-glass trick. (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 glass of water (b) a towel (c) a sink or a bucket (d) a balloon
39. 39.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.True or false: a medicine dropper works by air pressure. (a) True (b) False

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