Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 869 · 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? True or false: the same glass is what we measure. (a) False (b) True
2. 2.True or false: a suction hook works by air pressure. (a) False (b) True
3. 3.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
5. 5.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the water turns to ice (d) the glass breaks
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) yeast (d) a battery cell
7. 7.⚖️ 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 glass (c) how full the glass is (d) the same card
8. 8.🧺 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 mirror (c) a glass of water (d) a stiff postcard
9. 9.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
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? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a towel (d) a stiff postcard
13. 13.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a suction hook (d) a compass needle
14. 14.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🛟 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
16. 16.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.True or false: a suction hook works by magnetism. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a fridge magnet
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
20. 20.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a sink or a bucket (d) a balloon
22. 22.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
23. 23.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a towel (d) a mirror
26. 26.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
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 change it (b) we keep it the same (c) we measure it
28. 28.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
33. 33.True or false: a fridge magnet works by magnetism. (a) True (b) False
34. 34.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) turmeric powder
38. 38.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a sink or a bucket (d) a stiff postcard
40. 40.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure

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