Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 683 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
2. 2.⚖️ 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
3. 3.⚖️ 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) how full the glass is (c) the same glass
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a mirror (d) a stiff postcard
5. 5.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
6. 6.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
8. 8.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a balloon (d) a sink or a bucket
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a balloon (d) a mirror
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a mirror (d) a stiff postcard
15. 15.🔮 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
16. 16.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.⚖️ 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) the way we turn it (c) the same card (d) how full the glass is
19. 19.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a glass of water (d) a sink or a bucket
21. 21.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
22. 22.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.True or false: a bicycle pump works by magnetism. (a) True (b) False
26. 26.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.True or false: a magnetic chess set works by air pressure. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a bicycle pump (d) a vacuum cleaner
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a glass of water (d) a sink or a bucket
32. 32.🧺 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 towel (d) turmeric powder
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
35. 35.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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) True (b) False
37. 37.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic chess set (d) a bicycle pump
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True

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