Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 91 · 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.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.True or false: a magnetic chess set works by magnetism. (a) True (b) False
3. 3.⚖️ 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
4. 4.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🔮 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
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a compass needle (d) a magnetic chess set
7. 7.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
8. 8.🧺 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) yeast (d) a towel
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a medicine dropper (d) a bicycle pump
11. 11.🛟 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
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a magnetic pin holder
14. 14.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a drinking straw (d) a compass needle
15. 15.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.⚖️ 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) how full the glass is (c) whether the card stays (d) the same glass
18. 18.True or false: a bicycle pump works by air pressure. (a) True (b) False
19. 19.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.⚖️ 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 card (b) how full the glass is (c) whether the card stays
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a balloon (d) a magnet
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the glass breaks (d) the water turns to ice
25. 25.⚖️ 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 kept the same. (a) False (b) True
26. 26.⚖️ 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 kept the same. (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 change it (b) we measure it (c) we keep it the same
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a towel
29. 29.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.True or false: a bicycle pump works by magnetism. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the way we turn it
34. 34.🧺 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 glass of water
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a stiff postcard (d) a battery cell
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a balloon
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) yeast (d) turmeric powder
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism

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