Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 347 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys (d) the same string
3. 3.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
5. 5.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) sideways (d) up
7. 7.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a pencil (d) a small paper cup
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a balloon (d) string
10. 10.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
11. 11.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
12. 12.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
13. 13.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
18. 18.True or false: a slide is a wheel and axle. (a) False (b) True
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
20. 20.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a balloon (d) a small paper cup
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) False (b) True
23. 23.True or false: a steering wheel is a wheel and axle. (a) False (b) True
24. 24.True or false: a well pulley uses a pulley. (a) False (b) True
25. 25.True or false: a bottle opener is a lever. (a) False (b) True
26. 26.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
27. 27.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a doorknob (c) a crowbar (d) a spoon lifting a lid
28. 28.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a battery cell (d) a pencil
30. 30.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) coins as the load (d) a magnet
32. 32.True or false: a ramp uses a pulley. (a) False (b) True
33. 33.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.⚙️ Which simple machine is a ramp? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
37. 37.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
39. 39.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) magnet (d) battery
40. 40.True or false: a ramp is an inclined plane. (a) False (b) True

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