Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 343 · 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 sink or a bucket (c) a glass of water (d) a towel
2. 2.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
3. 3.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🧺 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) a sink or a bucket (d) a balloon
6. 6.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.True or false: a medicine dropper works by air pressure. (a) True (b) False
8. 8.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
9. 9.⚖️ 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) how full the glass is (c) whether the card stays (d) the way we turn it
10. 10.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a sink or a bucket
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
14. 14.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
15. 15.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
17. 17.🔮 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
18. 18.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
19. 19.⚖️ 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 same card (c) how full the glass is
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card (d) the way we turn it
23. 23.⚖️ 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
24. 24.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a compass needle (d) a medicine dropper
25. 25.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a drinking straw (d) a fridge magnet
26. 26.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
28. 28.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
29. 29.⚖️ 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 kept the same. (a) False (b) True
30. 30.True or false: a drinking straw works by air pressure. (a) False (b) True
31. 31.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
33. 33.⚖️ 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
34. 34.True or false: a fridge magnet works by air pressure. (a) False (b) True
35. 35.True or false: a bicycle pump works by magnetism. (a) False (b) True
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a bicycle pump
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) turmeric powder (d) a mirror
38. 38.🔮 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
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.True or false: a medicine dropper works by magnetism. (a) False (b) True

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