Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 254 · 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 is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a drinking straw (d) a fridge magnet
2. 2.⚖️ 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 the one thing we change. (a) True (b) False
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
4. 4.True or false: a medicine dropper works by air pressure. (a) False (b) True
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a stiff postcard (d) a glass of water
6. 6.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the water turns to ice (d) the card stays on
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a mirror (d) yeast
9. 9.True or false: a suction hook works by magnetism. (a) False (b) True
10. 10.True or false: a battery cell is needed for the card-on-a-glass trick. (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 stiff postcard (b) a sink or a bucket (c) a glass of water (d) a magnet
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
13. 13.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic pin holder
14. 14.⚖️ 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
15. 15.🛟 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
16. 16.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a bicycle pump
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the cap is sticky (d) the bottle is magnetic
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a towel (d) a glass of water
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) turmeric powder (d) a towel
20. 20.⚖️ 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
21. 21.⚖️ 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) the same card (c) whether the card stays
22. 22.🧺 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 glass of water (d) a battery cell
23. 23.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a magnetic chess set
24. 24.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.True or false: a compass needle works by magnetism. (a) False (b) True
26. 26.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) yeast
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a sink or a bucket (d) a battery cell
30. 30.🛟 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
31. 31.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
34. 34.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) the same card
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a towel (d) a glass of water
36. 36.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a drinking straw works by air pressure. (a) True (b) False
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure

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