6 Pre/Post Energy & Machines

What type of energy is stored in an object due to its position?

• Kinetic Energy

• Thermal Energy

• Potential Energy

• Sound Energy

Which of the following is an example of kinetic energy?

• A book sitting on a shelf

• A car driving down the street

• A light bulb turned off

• A compressed spring

How is work calculated in physics?

• Force (\times) Distance

• Mass (\times) Acceleration

• Speed (\times) Time

• Volume (\times) Density

What is the main function of a simple machine?

• To create energy

• To reduce distance

• To make work easier

• To increase weight

 Which simple machine is an inclined plane wrapped around a cylinder?

• Lever

• Pulley

• Screw

• Wheel and Axle

What does a pulley system help you do?

• Increase speed

• Reduce the effort needed to lift objects

• Change the color of an object

• Convert potential energy to kinetic energy

Which of the following is NOT a type of simple machine?

• Lever

• Wedge

• Pulley

• Battery

What is the purpose of a wedge?

• To hold objects together

• To separate or hold objects in place

• To measure force

• To create light

What is required for motion to occur?

• Energy

• Color

• Texture

• Temperature

What is the unit of force in the metric system?

• Joule

• Newton

• Watt

• Pascal