Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 848 · 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.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) an empty thread reel (d) string
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) how hard we must pull (d) the same string
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) a battery cell (d) a pencil
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a battery cell (d) string
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
7. 7.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
8. 8.⚙️ Which of these is a lever? (a) a tap handle (b) a doorknob (c) a bottle opener (d) a steering wheel
9. 9.⚖️ 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
10. 10.🧺 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 small paper cup (d) a magnet
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) coins as the load (d) a battery cell
13. 13.⚖️ 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
14. 14.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
15. 15.True or false: a steering wheel is a wheel and axle. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
17. 17.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
18. 18.⚙️ Which of these is a lever? (a) a well pulley (b) a ramp (c) a sloping road (d) a spoon lifting a lid
19. 19.True or false: a see-saw is a lever. (a) False (b) True
20. 20.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
21. 21.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a well pulley (c) a doorknob (d) a ramp
23. 23.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
24. 24.🛟 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
25. 25.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) a small paper cup (d) a pencil
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
29. 29.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which of these uses a pulley? (a) a ramp (b) a tap handle (c) a well pulley (d) a crowbar
31. 31.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
32. 32.True or false: string is needed for the thread-reel pulley. (a) False (b) True
33. 33.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) pulling down is easier (d) water gets lighter
34. 34.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) rope (d) nail
35. 35.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
36. 36.True or false: a crowbar is a wheel and axle. (a) False (b) True
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) yeast (c) an empty thread reel (d) a magnet
38. 38.True or false: a ramp is a wheel and axle. (a) False (b) True
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) a pencil (d) coins as the load
40. 40.True or false: a ramp is an inclined plane. (a) False (b) True

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