Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 983 · 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 glass of water (b) a towel (c) turmeric powder (d) a stiff postcard
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a stiff postcard (d) a magnet
3. 3.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🧺 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) a balloon (d) a stiff postcard
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.True or false: a bicycle pump works by air pressure. (a) False (b) True
8. 8.🔮 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 bottle is magnetic (d) the cap is sticky
9. 9.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) yeast
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a stiff postcard (d) a towel
16. 16.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
22. 22.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.⚖️ 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) the way we turn it (b) the same glass (c) the same card (d) whether the card stays
24. 24.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
25. 25.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
26. 26.🛟 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
27. 27.⚖️ 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) whether the card stays (d) the same card
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a towel (d) a sink or a bucket
31. 31.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
34. 34.🔮 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
35. 35.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.⚖️ 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 what we measure. (a) False (b) True
38. 38.True or false: a magnetic chess set works by air pressure. (a) True (b) False
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a mirror (d) a balloon
40. 40.🥛 Does a medicine dropper 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