Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 305 · 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 stiff postcard (b) a glass of water (c) a towel (d) yeast
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
4. 4.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.⚖️ 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
6. 6.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
9. 9.True or false: a compass needle works by air pressure. (a) True (b) False
10. 10.True or false: a drinking straw works by magnetism. (a) True (b) False
11. 11.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a battery cell (d) a glass of water
14. 14.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a glass of water (d) a stiff postcard
16. 16.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a battery cell
18. 18.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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
20. 20.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
22. 22.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a drinking straw works by air pressure. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
25. 25.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a medicine dropper
26. 26.True or false: a magnetic chess set works by magnetism. (a) False (b) True
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
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) whether the card stays (b) the way we turn it (c) how full the glass is
29. 29.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🔮 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 catch any spills (d) to grow plants
31. 31.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ 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
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) True (b) False
34. 34.True or false: a suction hook works by magnetism. (a) True (b) False
35. 35.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a drinking straw (d) a fridge magnet
36. 36.🧺 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) turmeric powder (d) a sink or a bucket
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) yeast (d) a stiff postcard
38. 38.🔍 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 card stays on (d) the water turns to ice
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a compass needle

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