Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 926 · 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 mirror is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.True or false: a magnetic chess set works by air pressure. (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 measure it (b) we change it (c) we keep it the same
4. 4.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a magnet (d) a sink or a bucket
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
7. 7.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) yeast
9. 9.⚖️ 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
10. 10.⚖️ 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 way we turn it (c) whether the card stays (d) the same card
11. 11.🔍 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
12. 12.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic pin holder
13. 13.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same card
14. 14.⚖️ 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
15. 15.⚖️ 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 kept the same. (a) False (b) True
16. 16.⚖️ 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 change it (b) we keep it the same (c) we measure it
17. 17.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a magnetic chess set (d) a fridge magnet
20. 20.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
22. 22.🧺 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 magnet (d) a towel
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
28. 28.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a towel (d) a glass of water
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a towel
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
32. 32.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
34. 34.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
37. 37.True or false: a drinking straw works by magnetism. (a) True (b) False
38. 38.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a suction hook (d) a drinking straw

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