Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 651 · 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 not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a balloon (d) a stiff postcard
2. 2.⚖️ 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
3. 3.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays (d) the way we turn it
4. 4.🥛 Does a bicycle pump 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 towel (b) a mirror (c) a stiff postcard (d) a glass of water
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a glass of water (d) a stiff postcard
8. 8.⚖️ 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) True (b) False
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) yeast (d) a stiff postcard
10. 10.⚖️ 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) True (b) False
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
13. 13.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.⚖️ 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) whether the card stays (c) the way we turn it
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a compass needle (d) a magnetic chess set
18. 18.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a suction hook
19. 19.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
24. 24.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
26. 26.True or false: a drinking straw works by air pressure. (a) True (b) False
27. 27.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
28. 28.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a fridge magnet (d) a compass needle
29. 29.True or false: a drinking straw works by magnetism. (a) True (b) False
30. 30.⚖️ 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) whether the card stays (c) the same glass
31. 31.🔍 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 water turns to ice (d) the glass breaks
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) yeast
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) turmeric powder (d) a mirror
35. 35.⚖️ 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
36. 36.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) turmeric powder (d) a towel
38. 38.True or false: a fridge magnet works by air pressure. (a) True (b) False
39. 39.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) it looks nicer (d) little air left inside
40. 40.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water

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