| A | B |
|---|
| What is the Second Law of Motion? | force causes an object to accelerate |
| What is friction? | force that opposes motion between objects |
| What is the Law of Gravitation? | two masses exert force on each other |
| What is weight? | gravitational force on an object |
| If a ball is thrown and a ball is dropped at the same time, which hits the ground first? | they hit at the same time |
| What is centripetal force? | unbalanced force causing acceleration to center |
| What is Newton's Third Law of Motion? | objects exert equal and opposite forces on each other |
| How do you calculate momentum? | mass times velocity |
| What is energy? | ability to cause change |
| What is potential energy? | stored energy |
| What is kinetic energy? | energy of motion |
| What is the Law of Conservation of Energy? | energy is not created or destroyed |
| What is work? | transfer of energy when an object is moved |
| What is the relationship between work and energy? | when work is done, energy is transferred |
| What is power? | work done per unit of time |
| What is a machine? | a device that increases force |
| What are some simple machines? | lever, pulley, wedge |
| What is a compound machine | two machines used together |
| What is temperature? | average kinetic energy of atoms in a substance |
| What is thermal energy? | sum of kinetic and potential energy |
| What is heat? | thermal energy that flows |
| What is specific heat? | amount of energy to raise the temperature of a substance |
| What is conduction? | energy transfer between molocules not in motion |
| What is convection? | energy transfer by molecules moving |
| What is radiation? | transfer of energy in the form of waves |
| What is insulation (an Insulator)? | a material that slows or stops energy transfer |
