Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 242 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) yeast (d) a sink or a bucket
3. 3.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
6. 6.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a mirror (d) a magnet
8. 8.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
12. 12.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.⚖️ 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
14. 14.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
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) the same glass (c) whether the card stays (d) how full the glass is
18. 18.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🧺 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 balloon (d) a towel
20. 20.⚖️ 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 the one thing we change. (a) False (b) True
21. 21.True or false: a compass needle works by air pressure. (a) True (b) False
22. 22.True or false: a drinking straw works by air pressure. (a) True (b) False
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
24. 24.True or false: a magnetic chess set works by magnetism. (a) True (b) False
25. 25.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) turmeric powder (d) yeast
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) True (b) False
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a balloon (d) a glass of water
30. 30.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a magnetic chess set
34. 34.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
36. 36.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a compass needle (d) a magnetic pin holder
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 way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner

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