Chapter 3 TEST 8TH

1. a simple machine made up of of a grooved wheel with a rope or cable wrapped around it.

• Pulley
• Wedge
• Inclined Plane
• Lever

2. a flat, sloped surface

• ramp
• staircase
• platform
• hill

3. the transfer of energy to an object by a force that makes an object move in the directions of the force.

• Force
• Energy
• Work
• Power

4. the ratio of the output work to the input work

• Output Ratio
• Productivity
• Efficiency
• Effectiveness

5. the rate at which work is done

• Force
• Power
• Velocity
• Energy

6. a sloped surface that moves

• Slide
• Platform
• Incline
• Ramp

7. an inclined plane wrapped around a cylinder

• wedge
• pulley
• lever
• screw

8. the ratio of the output force exetrted to the input force applied.

• Mechanical Advantage
• Output Efficiency
• Input Force
• Force Ratio

Which distance do you measure to determine how much work was done on an object that has been moved?

• The distance moved in the direction of the force.
• The distance from the starting point to the endpoint.
• The vertical distance moved only.
• The total distance traveled regardless of direction.

10. A rake makes doing work easier by changing the

• amount of work done
• speed of the rake
• type of material used
• direction of the force