Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 19 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a towel (d) a stiff postcard
2. 2.True or false: a suction hook works by air pressure. (a) True (b) False
3. 3.True or false: a drinking straw works by air pressure. (a) True (b) False
4. 4.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.True or false: a medicine dropper works by magnetism. (a) False (b) True
6. 6.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a stiff postcard (d) a glass of water
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
9. 9.⚖️ 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) True (b) False
10. 10.True or false: a compass needle works by magnetism. (a) False (b) True
11. 11.⚖️ 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 kept the same. (a) True (b) False
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.⚖️ 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
14. 14.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
16. 16.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a battery cell (d) a balloon
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
19. 19.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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) whether the card stays (c) the way we turn it (d) how full the glass is
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a balloon
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a sink or a bucket
24. 24.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
27. 27.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
28. 28.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a stiff postcard
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a vacuum cleaner (d) a drinking straw
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a battery cell (d) a magnet
32. 32.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
33. 33.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
35. 35.🧺 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 glass of water (c) a stiff postcard (d) turmeric powder
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a magnet (d) a stiff postcard
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a fridge magnet
38. 38.True or false: a drinking straw works by magnetism. (a) False (b) True
39. 39.🛟 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 magnetic (d) it is heavier
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a glass of water (d) a stiff postcard

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