| A | B |
|---|
| Newton's 3rd law of motion states that... | for every action force there is an equal and opposite reaction force |
| Static friction occurs when 2 objects are... | at rest |
| What is the friction between a rolling object and the surface it rolls on called? | rolling friction |
| Kinetic energy depends on | speed |
| The unit for energy is... | Joule |
| The total of potential and kinetic energy is | mechanical energy |
| In order for work to be done the force must | make the object move |
| THe gravitational potential energy of an object changes when which of the following changes? | mass |
| Work is equal to | force x distance |
| Power is | the work done in 1 second |
| An example of a simple machine is... | All of the above (lever, pulley, wedge) |
| A material in which electrons are NOT able to move is an... | insulator |
| The process of transferring charge by touching or rubbing is called | charging by contact |
| current is measured in ... | amperes |
| Power is measured in | watts |
| Voltage difference is measured in | volts |
| Resistance is measured in | ohms |
| electrical energy is measured in | kilowat hours |
| Ohm's Law states that | The current equals the voltage difference divided by the resistance |
| The type of circuit where the current only has one loop to flow through is called | Series circuit |
| The type of circuit that contains 2 or more branches for the current to move through is a | parallel circuit |
| The generation of current by a changing magnetic field is called | electromagnetic induction |
