Understanding Gear Ratios

What is a gear ratio?

• The size of a gear

• The speed of a gear

• The color of a gear

• The relationship between input and output gears

How can gear ratio be calculated?

• Using the gear's color

• Through the gear's material

• Based on the gear's diameter or number of teeth

• By the gear's weight

What does a gear ratio tell us about a gear system?

• Its weight

• The speed and torque relationship

• Its color

• Its material

What does a 1 to 1 gear ratio imply about speed and torque?

• Speed is doubled

• Torque is halved

• Speed and torque are unchanged

• Speed is halved

What happens to the gear ratio when a smaller gear replaces a larger one?

• It increases

• It decreases

• It becomes zero

• It remains the same

What is the effect of a 5 to 1 gear ratio on rotations?

• Equal rotations of input and output

• No rotations at all

• 1 rotation of input for 5 of output

• 5 rotations of input for 1 of output

In a bicycle, what gear setup is preferred for higher speed?

• Same size gears on both ends

• Largest gear on the front, smaller on the back

• No gears at all

• Smallest gear on the front, largest on the back

How does changing gear ratios affect a bicycle's performance uphill?

• Increases speed

• Decreases torque

• Increases torque

• No effect

Why might you want a 1 to 5 gear ratio in a bicycle?

• To make the bike heavier

• To increase uphill torque

• To decrease speed

• To increase speed

What is the benefit of having a larger gear on the back tire when going uphill?

• It increases torque

• It increases speed

• It makes the bike lighter

• It decreases torque