Gear Ratios

When speed increases, what happens to the value of torque?

• increases
• decreases
• stays constant

When speed decreases, what happens to the value of torque?

• increases
• decreases
• stays constant

When speed is constant, what happens to the value of torque?

• increases
• decreases
• stays constant

A gear ratio is defined as which of the following?

• Teeth of gear : teeth of gear
• gear shape : gear shape
• Speed : torque

What is the function of the smaller gear?

• Makes the output gear turn slower
• Makes the output gear turn faster
• Makes the larger gears turn in opposite directions.
• Makes the larger gears turn in the same direction.

What is a Ratio?

• It's a comparison of two things
• Multiplying two fractions 
• A number over another number
• Two decimals that can be multiplied

20 out of 45 students attended the concert; 12 out of 25 students attend the concert

• yes, equivalent
• no

20 out of 45 students attended the concert; 12 out of 25 students attend the concert

• yes, equivalent
• no

15 minutes to drive 21 miles; 25 minutes to drive 35 miles

• yes, equivalent
• no

18 vocab words learned in 2 hours; 27 vocab words learned in 3 hours

• yes, equivalent
• no, not equivalent