Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 158 · 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 needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a battery cell (d) yeast
2. 2.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.⚖️ 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
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
6. 6.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
7. 7.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
8. 8.⚖️ 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
9. 9.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a balloon (d) yeast
11. 11.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a towel (d) a stiff postcard
13. 13.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
15. 15.⚖️ 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 change it (c) we keep it the same
16. 16.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
17. 17.True or false: a suction hook works by air pressure. (a) False (b) True
18. 18.🛟 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
19. 19.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
21. 21.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
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) the same card (b) the way we turn it (c) how full the glass is (d) whether the card stays
23. 23.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
24. 24.⚖️ 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
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
26. 26.⚖️ 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 card (b) the same glass (c) whether the card stays (d) how full the glass is
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) turmeric powder (d) yeast
29. 29.True or false: a fridge magnet works by air pressure. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
31. 31.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
34. 34.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
35. 35.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
36. 36.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.⚖️ 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) True (b) False
38. 38.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a towel (d) a sink or a bucket
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a magnet

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