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Science Test 5/22/18
Question | Answer |
---|---|
What is Newton's First Law of Motion? | Objects in motion stay in motion, objects at rest stay at rest, unless acted on by an unbalanced force. |
What is Newton's Second Law of Motion? | F=ma |
What is Newton's Third Law of Motion? | For every action force there is an equal and opposite reaction force. |
What does the acceleration of an object depend on? | The mass and net force |
The greater the force...(acceleration) | The greater the acceleration |
The greater the mass...(acceleration) | The greater the mass the lower the acceleration. |
Forces come in __________. | Pairs |
What is momentum? | A quantity that keeps objects in motion. |
What does momentum depend on? | Mass and Velocity |
The more mass... (momentum) | More momentum |
The more velocity...(momentum) | More momentum |
What is the letter symbol for momentum? | P |
What is the Law of Conservation of Momentum? | During a collision momentum is transferred but the total momentum stays the same. |
What is the Net Force of an object? | The overall force on an object. |
Forces in the same direction... | add |
Forces in opposite directions... | subtract |
What is a force? | Any push or pull on an object. |
What is an unbalanced force? | A non-zero net force (one force is stronger) that causes an object to accelerate. |
What is a balanced force? | A net force of zero (all forces cancel out) that does not cause an object to accelerate. |
What is a force diagram? | Shows all the forces acting an object with arrows where the length of the arrow represents the strength. |
What is the Law of Electric Charges? | Like charges repel. Opposite charges attract. |
What is an electric force? | Force that surrounds an electric charge with lines drawn from positive to negative. |
As the size of the charge increases... (electric force) | As the size of the charge increases, the electric force increases. |
As the distance increases... (electric field) | As distance increases, the electric force decreases. |
What is static electricity? | The build up of stationary electric charges by gaining or losing electrons. |
What is friction in relation to static electricity? | The transfer of electrons from one object to another by rubbing. |
What is conduction? | The transfer of electrons from one object to another by direct contact. |
What is induction? | The rearrangement of electrons in one object due to the electric field of a another object. |
What is the Law of Magnetic poles? | Like poles repel. Opposite poles attract. |