You can use gears in your robot to _______.

• create a torque advantage

• create a speed advantage

• create either torque or speed advantages, depending on what the robot needs to do

• None of the above

If you were riding a bicycle, how would you be using gears?

• Changing gears lets you pedal more easily or makes you need more force to pedal.

• Changing gears lets your pedaling make you move farther or shorter distances.

• Changing gears lets you pedal easily up steep hills or quickly across even surfaces.

• All of the answers are correct.

If gears are connected together as in a gear box, how do you calculate the total gear ratio?

• Add each gear ratio in the chain

• Multiply each gear ratio in the chain

• Divide the teeth on the first driving gear by the teeth on the final, output gear

• None of the answers are correct.

A gear box can demonstrate a high or low gear configuration.

• True

• False

Which configuration will result in the highest torque output?

• Large driving gear, large driven gear

• Large driving gear, small driven gear

• Small driving gear, small driven gear

• Small driving gear, large driven gear

The driven gear _______.

• does the turning

• is always larger than the driving gear

• is always smaller than the driving gear

• is turned by the driving gear

What is the primary purpose of a simple machine?

• To reduce the efficiency of work

• To increase the amount of work needed

• To make work easier by multiplying force or changing its direction

• To eliminate the need for energy

Which simple machine is used to split objects apart or hold them together? Mark only one oval.

• Pulley

• Wedge

• Lever

• Wheel and Axle

A ramp is an example of which type of simple machine? Mark only one oval.

• Lever

• Inclined Plane

• Screw

• Pulley

Which simple machine uses a wheel and a rope to lift objects? Mark only one oval.

• Pulley

• Wheel and Axle

• Lever

• Inclined Plane