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Energy and Forces
Review for Test on Energy and Forces
| Question | Answer |
|---|---|
| ability to cause changes in matter | energy |
| A ball on top of a hill has _________ energy because of its position | potential energy |
| A ball rolling down a hill has __________ energy because it is moving | kinetic energy |
| A wire is an example of a ___________ because it allows energy to pass through it easliy | conductor |
| Styrofoam and plastic do not allow energy to pass through them easily so they are ________ | insulators |
| I need a load (bulb), power source, and wire to make an _____________ ______________ | electrical circuit |
| energy will not pass through an ________ _______ becuase the wires are not touching | open circuit |
| will allow an electrical current to pass through | closed circuit |
| light energy that bounces back to the eye | reflection |
| light passes through an object and changes the appearance of that object | refraction |
| a high or low sound | pitch |
| a loud of soft sound that has a TALL or short wave | amplitude (volume) |
| heat flows through a solid because it is touching a heat source | conduction |
| heat flowing through a liquid or gas in a circular pattern | convection |
| heat that flows through a space (ex. sun) | radiation |
| two objects rubbing up against each other | friction |
| force that moves something closer | pull |
| force that moves something further away | push |
| these travel through solids, liquids and gases to make sound | vibrations |
| this circuit has more than one path for electricity to flow | parallel circuit |
| this circuit will make bulbs brighter and stay lit if a light goes out | parallel circuit |
| this cicuit has only one path for energy to flow on | series circuit |
| this circuit will have all the lights go out if one light is removed | series circuit |
| a zip top bag is ____________ beacuse I can see through it | transparent |
| a black shirt is ____________ because no light will pass through it | opaque |
| wax paper and light covers are ___________ because some light will go through but I can't see everything on the other side | translucent |
| True or False: Energy cannot be created or destroyed | True, we cannot make or destroy energy it only changes forms |
| True or False: Energy does not change forms | False, we can change electrical energy to sound energy OR mechanical energy to electrical energy |
| True or Flase: Sound energy cannot travel through outer space | True, sound energy needs matter (solids, liquids and gases) in order to make vibrations |
| A force can change an objects _______, _______, or __________ | position, speed, or direction |
| A iron rod (nail), wire, and a power source is all that is needed to make an ___________ | electromagnet |
| To make an electromagnet stronger it needs ____ | more coils in the wire |
| The greater an objects mass or volume the ______ the force it will have | greater |
| True or Flase: Sound energy cannot travel through outer space | True, sound energy needs matter (solids, liquids and gases) in order to make vibrations |
| A force can change an objects _______, _______, or __________ | position, speed, or direction |
| A iron roc (nail), wire and a power source is all that is needed to make an ___________ | electromagnet |
| To make an electromagnet stronger it needs ____ | more coils in the wire |
| The greater an objects mass or volume the ______ the force it will have | greater |
Created by:
Johnson5
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