Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 733 · 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 see-saw uses a pulley. (a) True (b) False
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) a balloon
3. 3.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
4. 4.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
5. 5.True or false: a doorknob uses a pulley. (a) True (b) False
6. 6.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
7. 7.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) the rope gets shorter (d) water gets lighter
8. 8.True or false: a tap handle uses a pulley. (a) True (b) False
9. 9.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
11. 11.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) the same string (d) how hard we must pull
13. 13.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) a battery cell (d) an empty thread reel
15. 15.⚙️ Which of these uses a pulley? (a) a ramp (b) a tap handle (c) a bottle opener (d) a flagpole
16. 16.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
19. 19.True or false: a spoon lifting a lid is a lever. (a) True (b) False
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a pencil (d) coins as the load
21. 21.True or false: a flagpole is a lever. (a) True (b) False
22. 22.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
23. 23.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
24. 24.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) nail (d) magnet
25. 25.True or false: a tap handle is a lever. (a) False (b) True
26. 26.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a pencil (c) a magnet (d) a balloon
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) turmeric powder (d) a pencil
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
30. 30.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
31. 31.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a magnet (d) an empty thread reel
33. 33.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
34. 34.⚙️ Which of these is a lever? (a) a see-saw (b) a crane (c) a ramp (d) a flagpole
35. 35.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
36. 36.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
37. 37.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a slide (c) a see-saw (d) a well pulley
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) False (b) True
39. 39.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a well pulley (d) a crowbar
40. 40.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed

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