Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 29 · 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 glass of water (b) a magnet (c) a battery cell (d) a mirror
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
3. 3.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
4. 4.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
8. 8.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a suction hook
9. 9.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
10. 10.True or false: a drinking straw works by magnetism. (a) True (b) False
11. 11.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
14. 14.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a magnet (d) a stiff postcard
17. 17.⚖️ 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) how full the glass is (c) the way we turn it (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.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 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) a balloon
22. 22.True or false: a glass of water is 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 kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
24. 24.🔮 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
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a mirror (d) a towel
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) turmeric powder
27. 27.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a stiff postcard (d) a sink or a bucket
30. 30.⚖️ 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 change it (c) we measure it
31. 31.True or false: a suction hook works by magnetism. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a medicine dropper (d) a magnetic chess set
33. 33.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
34. 34.True or false: a drinking straw works by air pressure. (a) True (b) False
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a mirror
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a sink or a bucket
37. 37.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
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 change it (c) we keep it the same
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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