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Benchmark 3 Review
Benchmark Review
| Question | Answer |
|---|---|
| Energy of motion | Kinetic Energy |
| To increase kinetic energy | Increase mass and velocity |
| Rubbing your hands together friction converts | Mechanical energy into thermal energy |
| A rolling bowling ball | has kinetic energy |
| Stored energy | Potential energy |
| Potential energy that depends on height | Gravitational potential energy |
| A change from one form of energy to another | Energy transformation |
| When two forces act in the same direction | They are added together |
| The tendency to resist change in motion | inertia |
| The greater the mass of an object | The greater its inertia |
| The force of gravity pulling on an object | Weight |
| To increase acceleration | Decrease mass |
| The force that one surface exerts on another when they rug against each other | Friction |
| Air resistance is a type of | Friction |
| Forces are added | Only when they act on the same object in the same direction |
| The amount of matter in an object | Mass |
| Objects falling through air have a type of friction called | air resistance |
| Balanced forces never change an object's | Motion |
| When the distance between two objects is changing | It is in motion |
| Speed equals distance divided ty | time |
| Speed in a given direction | Velocity |
| The rate at which velocity changes is | Acceleration |
| A place or object used for comparison | Reference point |
| If speed does not change the speed is | constant |
| Object moving in the same direction at a constant speed did not change | Velocity |
| Heat transferred from particle to particle without the movement of matter itself | conduction |
| The transfer of energy by electromagnetic waves | radiation |
| Heat transfer occurs | only from warmer to cooler ones |
| Warm air rises from an bonfire by | convection |
| Total distance divided by total time | Average speed |
| If two objects travel at the same speed, they can have different velocities if they | travel in different directions |
| Force that pulls falling objects toward Earth | gravity |
| Acceleration is the change in speed per unit | time |
| A factor that affects acceleration: (a = f/m) | force |
| A motor heats up when it runs because | some energy is lost as heat due to friction |
| Gasoline in a car is converted to | mechanical, heat and sound energy |
| The transfer of energy from the sun is | Radiation |
| Warmth from a fireplace is due to | radiation |
Created by:
CMoody
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