Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 186 · 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 stiff postcard (b) a sink or a bucket (c) a battery cell (d) a towel
2. 2.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🔍 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
4. 4.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
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 keep it the same (c) we measure it
12. 12.True or false: a bicycle pump works by magnetism. (a) True (b) False
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a stiff postcard (d) a glass of 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) whether the card stays (b) the way we turn it (c) how full the glass is
16. 16.⚖️ 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
17. 17.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
18. 18.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
19. 19.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a drinking straw
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
22. 22.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a bicycle pump
26. 26.True or false: a magnetic chess set works by air pressure. (a) True (b) False
27. 27.⚖️ 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 measure it (c) we keep it the same
28. 28.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
29. 29.⚖️ 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
30. 30.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
32. 32.True or false: a fridge magnet works by magnetism. (a) False (b) True
33. 33.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
34. 34.🧺 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) turmeric powder (d) a stiff postcard
35. 35.⚖️ 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
36. 36.True or false: a towel is not needed for the card-on-a-glass trick. (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 glass of water (b) yeast (c) a sink or a bucket (d) a stiff postcard
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a mirror (d) a glass of water
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a mirror (d) a sink or a bucket
40. 40.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed

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