Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 492 · 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.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
2. 2.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.⚖️ 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) False (b) True
7. 7.🧺 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) yeast (d) a sink or a bucket
8. 8.🧺 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 magnet (d) a glass of water
9. 9.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a compass needle
13. 13.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to catch any spills (d) to grow plants
15. 15.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.True or false: a magnetic chess set works by air pressure. (a) False (b) True
17. 17.True or false: a bicycle pump works by magnetism. (a) True (b) False
18. 18.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.True or false: a compass needle works by air pressure. (a) True (b) False
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a balloon (d) a glass of water
21. 21.⚖️ 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
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
23. 23.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
24. 24.🔍 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 water turns to ice (c) the card stays on (d) the glass breaks
25. 25.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a glass of water (d) a stiff postcard
27. 27.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a compass needle
28. 28.⚖️ 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) True (b) False
29. 29.🔮 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) the bottle is magnetic (d) water is hiding there
30. 30.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a fridge magnet
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a towel (d) a glass of water
35. 35.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a bicycle pump (d) a magnetic pin holder
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a suction hook (d) a medicine dropper
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a magnet (d) a glass of water
39. 39.⚖️ 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 the one thing we change. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a magnetic chess set (d) a fridge magnet

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids