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When an object changes position in relation to a reference point
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The object which stays in place in relation to an object that is moving
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Force and Motion
6th grade Force and Motion
| Question | Answer |
|---|---|
| When an object changes position in relation to a reference point | Motion |
| The object which stays in place in relation to an object that is moving | Reference Point |
| The rate at which an object moves; | Speed |
| The speed of an objection in a particular direction | Velocity |
| The rate at which velocity (speed/direction) changes. | Acceleration |
| Acceleration that occurs in a circular motion | Centripetal Acceleration or Centripetal Force |
| A push or pull; | Force |
| an (SI) unit of measurement used by scientists to express force | Newton |
| The force that results from combining all of the forces exerted on an object | Net Force |
| When the net force of an object is not zero | Unbalanced Force |
| When the forces applied to an object produce a net force of zero | Balanced Force |
| Happens when a force causes an object to move in the direction of the force | Work |
| A force that opposes motion between two surfaces that are touching | Friction |
| The force of attraction between all objects that is due to their masses | Gravity |
| The measure of gravitational forces exerted on an object | Weight |
| The tendency of all objects to resist any change in motion | Inertia |
| The characteristic of a moving body that is caused by its mass and its motion | Momentum |
| Speed = | distance/time |
| Velocity involves both speed and _________ | Direction |
| Acceleration is any change in ____________ | Velocity (speed or direction) |
| A force is a ________ and __________. | Push and pull |
| Two forces that affects motion are ______ and _________ | Gravity and friction |
| The force that keeps you in a roller coaster during a looop is called ________________ | Centripital Force |
| Combining all of the forces acting on an object gives you _______ ________. | Net Force |
| If forces are working in the same direction, you ______ them | Add. |
| If forces are working in opposite directions, you ______ them. | Subtract |
| A net force of zero means that an object is ____________ | Balanced. |
| A net for of 5N left means that an object is ___________. | Un balanced. |
| It always takes a ________ force to move an object or stop it from moving. | Unbalanced. |
| Friction is an _________ force because objects are working against each other. | Unbalanced. |
| Putting oil or water on a surface would _______ friction. | Reduce. |
| PUtting sandpaper on a surface would _______ friction. | Increase. |
| Friction changes the _________ of an object. | Motion |
| Gravity is a force of ________ because objects are pulling toward each other. | Attraction |
| All objects in the universe attract each other through gravitational force. The size of the force depends on the ________ of the object and the ________ between them. | Mass and Distance. |
| The more mass something has the _________ gravitational pull it has. | More. |
| The closer objects are, the, _________ gravitational force they have. | More. |
| When objects are further distance apart, their gravitational force ________ | Lessens. |
| Which does NOT change based on gravity? Mass or weight? | Mass. |
| 1 Law - Inertia - an object at rest will stay at ________. | Rest |
| An object in motion will stay in _______, unless an ________ force acts upon it. | Motion and Unbalanced |
| 2nd LQV^/ - Acceleration - an object's acceleration depends on it's mass and the amount of force exerted on it. As mass increases, acceleration ________________. | Decreases |
| 3rd Law Action/Reaction - whenever one object exerts a force on another object, the second object exerts an _______ and ________ force on the first object. | Equal and opposite. |
| Machines make work and motion easier because they change the ___________ and/or the amount of the force | Direction |
| Name the six simple machines | Lever, pulley, inclined plane (ramp), wedge, wheel and axle, screw. |
| Name the three parts of the lever. | Fulcrum, load (resistance), force. |
| Ona lst class lever, the ______ is in the middle. | Fulcrum. |
| Moving the fulcrum closer to the load/resistance | Decreases the effort. |
| On a 2nd class lever, the _ _____ is in the middle. | Load |
| On a 3rd class lever, the _______ is in the middle | Effort |
| Fixed/Simple pulleys only change the ______ of the force. | Direction |
| Moveable pulleys change the _ ______ of the force | Amount. |
| When a machine reduces the effort, it is called a mechanical __________. | Adventage |
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