Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 293 · 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.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a magnet (d) a glass of water
3. 3.🔍 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 glass breaks (c) the water turns to ice (d) the card stays on
4. 4.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.True or false: a fridge magnet works by magnetism. (a) False (b) True
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
8. 8.🛟 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
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a battery cell (d) a stiff postcard
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
12. 12.⚖️ 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) False (b) True
13. 13.⚖️ 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
14. 14.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
15. 15.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
16. 16.⚖️ 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 glass (b) how full the glass is (c) whether the card stays
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a magnet (d) a towel
18. 18.🧺 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) turmeric powder
19. 19.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🛟 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 hotter (d) it is magnetic
21. 21.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a bicycle pump (d) a magnetic pin holder
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a mirror
23. 23.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.True or false: a magnetic chess set works by magnetism. (a) False (b) True
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
26. 26.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (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 keep it the same (b) we measure it (c) we change it
28. 28.⚖️ 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
29. 29.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays (d) the same card
30. 30.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a fridge magnet
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a balloon (d) a stiff postcard
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a mirror (d) a sink or a bucket
40. 40.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure

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