Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 266 · 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 compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a vacuum cleaner
3. 3.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🔍 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 card flies away (d) the glass breaks
5. 5.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
7. 7.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a magnet (d) a stiff postcard
9. 9.⚖️ 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
10. 10.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
12. 12.True or false: a compass needle works by air pressure. (a) True (b) False
13. 13.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
15. 15.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a magnet (d) a balloon
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🧺 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 magnet (d) a towel
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
24. 24.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
25. 25.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a suction hook (c) a bicycle pump (d) a medicine dropper
26. 26.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.⚖️ 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
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 what we measure. (a) False (b) True
29. 29.⚖️ 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) False (b) True
30. 30.True or false: a suction hook works by air pressure. (a) False (b) True
31. 31.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ 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) the way we turn it (d) how full the glass is
33. 33.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a bicycle pump (d) a magnetic chess set
34. 34.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
36. 36.True or false: a magnetic chess set works by air pressure. (a) True (b) False
37. 37.🧺 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 battery cell
38. 38.⚖️ 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
39. 39.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water

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