Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 510 · 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) a sink or a bucket (b) a mirror (c) a glass of water (d) a stiff postcard
2. 2.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
6. 6.True or false: a compass needle works by air pressure. (a) False (b) True
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a glass of water (d) a magnet
8. 8.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
9. 9.True or false: a magnetic chess set works by air pressure. (a) False (b) True
10. 10.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.True or false: a medicine dropper works by magnetism. (a) True (b) False
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.⚖️ 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
15. 15.🥛 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
16. 16.🧺 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
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
18. 18.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a compass needle
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a sink or a bucket (d) a glass of water
20. 20.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
21. 21.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
27. 27.🔍 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
28. 28.⚖️ 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
29. 29.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
30. 30.🧺 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 magnet (d) a glass of water
31. 31.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
32. 32.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic chess set
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a magnet (d) yeast
35. 35.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.⚖️ 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) how full the glass is (c) the same card (d) the same glass
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
39. 39.⚖️ 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
40. 40.🧺 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 sink or a bucket (d) a glass of water

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