Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 61 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) string (d) a pencil
2. 2.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the lifting height (c) number of pulleys
5. 5.⚖️ 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
6. 6.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) water gets lighter (d) the bucket floats
7. 7.⚖️ 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
8. 8.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a small paper cup (d) a pencil
10. 10.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
11. 11.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) a small paper cup (d) string
14. 14.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a magnet (d) a small paper cup
16. 16.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) a mirror
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same string (c) how hard we must pull (d) the same cup of coins
19. 19.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) string (c) an empty thread reel (d) a pencil
23. 23.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
24. 24.True or false: a sloping road is a lever. (a) True (b) False
25. 25.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
26. 26.True or false: string is needed for the thread-reel pulley. (a) False (b) True
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
28. 28.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
29. 29.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
30. 30.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) up (c) sideways (d) in a circle
31. 31.⚙️ Which simple machine is a well pulley? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
32. 32.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a slide (c) a flagpole (d) a tap handle
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a mirror (d) an empty thread reel
35. 35.🧺 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
36. 36.True or false: a bottle opener is a lever. (a) False (b) True
37. 37.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
38. 38.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
39. 39.⚙️ Which of these is an inclined plane? (a) a crane (b) a steering wheel (c) a ramp (d) a spoon lifting a lid
40. 40.⚖️ 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) True (b) False

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