Match each word to the sentence where it best fits.
| kinetic energy | elastic potential energy | | work | joule (J) | | gravitational potential energy | spring constant | | reference frame |
- Doing ____ in the physics sense means applying a force that causes an object to move some distance in the direction of the force.
- A/An _____ is the amount of energy that is sufficient to produce a force of 1 N that acts for 1 m.
- Global Positioning Satellites provide a ________ from which you can determine your position on the Earth and the current time.
- A compressed spring has ________ equal to the work which the spring could do if it expanded again.
- The _______ goes up by a factor of four if the speed increases by a factor of two.
- The ________ is a quantity that indicates the strength of the restoring force exerted by an elastic material when it is stretched.
- Water at the top of a dam has ________ as a result of its height above the bottom of the dam.
| friction | system | | efficiency | law of conservation of energy | | open system | closed system | | elastic collision | inelastic collision | |
- The _______ of a system describes how effectively the system transforms input energy into output energy.
- A/An ________ is one in which energy can flow into or out of it over time.
- When a car rolls down a ramp not all of the potential energy becomes kinetic energy because ______ transforms some energy into heat and wear.
- The ________ says that energy stays constant over time.
- We choose the objects and influences in a ______ to focus on what we are trying to investigate and exclude things that are irrelevant.
- A/An ________ is one in which there is no net flow of energy into or out of it.
- Momentum is conserved in all collisions, but kinetic energy is only conserved in a(n) _______.
| |
| watt (W) | intensity | | horsepower (hp) | ampere (A) | | volt (V) | power | | light | radiant energy | | electric current |
- The flow of charged particles is called ________.
- An energy flow of 1 joule per second is called one ________.
- The rate at which work is done is called ______.
- The _______ of light describes how many watts of power fall cross one square meter of area.
- ______ is a form of radiant energy that travels through space.
- 746 watts is equal to one _________.
- A/An ________ is the SI unit for electric current.
- An indicator of electric potential energy is the ________.
| thermal energy | temperature | | specific heat | Brownian motion | | melting point | boiling point | | gas | solid | | liquid | Celsius scale | | Fahrenheit scale | heat | | renewable energy | phases of matter | | condensation | Calorie (C) | | calorie (c) |
- The __________ is a unit of energy that is often found on food nutritional labels.
- The capacity for thermal energy to flow from one object to another is called ________.
- In the winter ___________ flows out from heating devices, such as radiators or air vents, in your home to warm the inside environment.
- Apple juice is an example of matter in its ________ phase.
- The helium inside a balloon is an example of matter in its ________ phase.
- The wood in a table is an example of matter in its ________ phase.
- Solar power is an example of ________.
- The qualities of hot or cold are described by ________.
- It takes 4.18 joules to raise one gram of water by one degree Celsius because the ________ of water is 4.18 J/gºC.
|
