Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 438 · 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.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
3. 3.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a towel (d) a glass of water
6. 6.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
7. 7.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a magnetic chess set (d) a compass needle
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.True or false: a fridge magnet works by magnetism. (a) True (b) False
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: a suction hook works by air pressure. (a) True (b) False
15. 15.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a battery cell
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a towel
22. 22.⚖️ 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
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
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) the bottle is magnetic (d) air inside pushes back
25. 25.🔍 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
26. 26.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a fridge magnet (d) a suction hook
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a sink or a bucket
29. 29.⚖️ 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
30. 30.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
31. 31.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.True or false: a magnetic chess set works by air pressure. (a) True (b) False
34. 34.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.⚖️ 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
36. 36.⚖️ 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) True (b) False
37. 37.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a medicine dropper
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a towel (d) a balloon
40. 40.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed

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