Title: Experiment Two (Quiz version)

The image above shows a gear combination in which a 24-tooth gear is driving a 12-tooth gear. Calculate and give the gear ratio (Driving gear to Driven gear) as a simplest ratio:

Q: [...] : [...]
A: 2; 1
[Image: 24-tooth gear driving 12-tooth gear]

The image above shows a gear combination in which a 24-tooth gear is driving an 8-tooth gear. Calculate and give the gear ratio (Driving gear to Driven gear) as a simplest ratio:

Q: [...] : [...]
A: 3; 1
[Image: 24-tooth gear driving 8-tooth gear]

The image above shows a gear combination in which a 20-tooth gear is driving a 12-tooth gear. Calculate and give the gear ratio (Driving gear to Driven gear) as a simplest ratio:Fill in the missing words

Q: [...] : [...]
A: 5; 3
[Image: 20-tooth gear driving 12-tooth gear]

- 20:12
- 24:8
- 24:12
- [Image: 24-tooth gear driving 12-tooth gear]
- [Image: 24-tooth gear driving 8-tooth gear]
- [Image: 20-tooth gear driving 12-tooth gear]
- Predict the order in which these gear combinations will change the speed
(1st being the biggest increase in speed)
- 1st
- 2nd
- 3rd
Q: 24:12 Prediction
A: [Image: 24-tooth gear driving 8-tooth gear]; [Image: 20-tooth gear driving 12-tooth gear]; Predict the order in which these gear combinations will change the speed (1st …; 1st; 2nd; 3rd
Q: 24:8 Prediction
A: [Image: 24-tooth gear driving 8-tooth gear]; [Image: 20-tooth gear driving 12-tooth gear]; Predict the order in which these gear combinations will change the speed (1st …; 1st; 2nd; 3rd
Q: 20:12 Prediction
A: [Image: 24-tooth gear driving 8-tooth gear]; [Image: 20-tooth gear driving 12-tooth gear]; Predict the order in which these gear combinations will change the speed (1st …; 1st; 2nd; 3rd

- Assemble and test these three gear combinations, then order them according to how they change the speed (1st being the biggest increase in speed)
- First
- Second
- Third
- 24:12
- 24:8
- 20:12
- [Image: 24-tooth gear driving 12-tooth gear]
- [Image: 24-tooth gear driving 8-tooth gear]
- [Image: 20-tooth gear driving 12-tooth gear]
Q: 24:12 Result
A: 24:12; 24:8; 20:12; Second
Q: 24:8 Result
A: 24:12; 24:8; 20:12; First
Q: 20:12 Result
A: 24:12; 24:8; 20:12; Third