Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 681 · 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.🧺 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 towel (c) a stiff postcard (d) a balloon
2. 2.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) turmeric powder (d) a mirror
5. 5.⚖️ 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) whether the card stays (c) how full the glass is (d) the way we turn it
6. 6.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a magnetic chess set (d) a drinking straw
7. 7.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
8. 8.True or false: a magnetic chess set works by magnetism. (a) False (b) True
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) a balloon
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a battery cell (d) a sink or a bucket
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
12. 12.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) air pressure (d) friction
13. 13.⚖️ 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) the same glass (c) whether the card stays (d) the same card
14. 14.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
15. 15.⚖️ 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 what we measure. (a) True (b) False
16. 16.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a bicycle pump (d) a suction hook
17. 17.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
18. 18.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a compass needle
19. 19.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a compass needle
21. 21.True or false: a drinking straw works by air pressure. (a) False (b) True
22. 22.True or false: a fridge magnet works by air pressure. (a) False (b) True
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the water turns to ice (d) the card stays on
25. 25.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🧺 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 towel (c) a battery cell (d) a stiff postcard
28. 28.⚖️ 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 kept the same. (a) False (b) True
29. 29.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.⚖️ 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
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
32. 32.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
33. 33.⚖️ 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
34. 34.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
35. 35.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a magnet
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
38. 38.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a vacuum cleaner (d) a suction hook

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