Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 818 · 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.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
3. 3.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) turmeric powder
5. 5.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
7. 7.🧺 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 glass of water (d) a balloon
8. 8.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a magnetic chess set
9. 9.⚖️ 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 way we turn it (c) whether the card stays (d) the same glass
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
11. 11.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a drinking straw (d) a medicine dropper
12. 12.🔮 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
13. 13.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
14. 14.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
16. 16.🧺 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
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.⚖️ 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 glass (b) the way we turn it (c) how full the glass is (d) the same card
19. 19.True or false: a bicycle pump works by magnetism. (a) True (b) False
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.⚖️ 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 the one thing we change. (a) True (b) False
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 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
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
28. 28.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a balloon (d) a stiff postcard
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
33. 33.⚖️ 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
34. 34.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
36. 36.True or false: a suction hook works by air pressure. (a) True (b) False
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) yeast (d) a sink or a bucket
38. 38.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🔍 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 card stays on (c) the water turns to ice (d) the glass breaks
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 the one thing we change. (a) True (b) False

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