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Mrs. Rynolds
Unit 7 Study Guide
| Question | Answer |
|---|---|
| Aristotle | He proposed two main concepts associated with motion geocentrism and free fall |
| Geocentrism | this is the belief that the planets and Sun revolved around Earth. |
| Galileo Galilei | He helped to disprove Aristotle’s 2 claims of motion. |
| Heliocentrism | this is the accepted belief that all the planets in our solar system revolve around the Sun. |
| Free Fall | All objects, in a vacuum (no air resistance), fall at the same rate, regardless of mass of the object. |
| Sir Isaac Newton | helped to create a field which involves force, energy, gravity, and motion of objects. |
| Gravity | This is a natural phenomenon by which all physical bodies attract each other. |
| Weight | This is the pull of gravity on an object. |
| Weight is measured in | Newtons |
| The formula for Weight is | W= mg |
| Buoyancy | This is an upward force that is contrary to gravity. |
| All objects are affected by | gravity |
| directly proportional | The relationship between mass and gravity (Both values increase or decrease basically) |
| inversely proportional | The relationship between distance and gravity (One value increases and the other decreases.) |
| Acceleration | his term is used for the rate of change in the position of an object over time. |
| All objects accelerate at the same rate due to | gravity |
| Accelerate | This term refers to the increase in movement of an object. |
| Decelerate | This term refers to the slowing in movement of an object. |
| Acceleration can be affected by | mass and force |
| The heavier an object | the more force needed to move or stop the object |
| The greater the amount of force | the faster or slower an object will accelerate or decelerate |
| To decelerate an object | requires a force working in the opposite direction |
| To accelerate an object | requires the force to be in the same direction as the objects movement |
| Velocity | This is defined as the rate of change in the position of an object. |
| Velocity | It is measured in speed and direction. |
| Speed | Defined as magnitude (amount) in velocity. |
| Direction | north, south, west, east, up, down, left, right |
| Resistance | This term refers to any opposite and opposing force to hinder or reduce movement. |
| Resistance | can reduce velocity and cause deceleration of objects. |
| Inertia | This term refers to the resistance of any physical object to any change in its current state of motion, speed, or direction. |
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