Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 403 · 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: a flagpole is an inclined plane. (a) True (b) False
2. 2.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
3. 3.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) an empty thread reel (d) turmeric powder
5. 5.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
6. 6.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
7. 7.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
8. 8.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a pencil (d) coins as the load
10. 10.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) coins as the load (d) an empty thread reel
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) double (d) the same
13. 13.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crane (c) a ramp (d) a doorknob
14. 14.⚖️ 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 string (c) the same cup of coins (d) number of pulleys
15. 15.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) sideways (d) in a circle
16. 16.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) number of pulleys (c) the lifting height (d) how hard we must pull
18. 18.True or false: a crowbar uses a pulley. (a) True (b) False
19. 19.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty thread reel (d) coins as the load
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) yeast (d) a balloon
23. 23.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a flagpole (c) a tap handle (d) a well pulley
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
25. 25.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the flagpole (d) on the bench
26. 26.🧺 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) an empty thread reel (d) a battery cell
27. 27.True or false: a bottle opener is a lever. (a) True (b) False
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
30. 30.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
31. 31.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crowbar (c) a sloping road (d) a doorknob
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: a well pulley uses a pulley. (a) False (b) True
35. 35.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
36. 36.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a sloping road (c) a well pulley (d) a flagpole
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.⚖️ 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
39. 39.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
40. 40.True or false: a crane uses a pulley. (a) True (b) False

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