Show:
Nature of Energy
Energy Conversion and Conservation
Energy Conversions and Fossil Fuels
Power
Mish/Mash
100
This is the energy of motion.
What is kinetic energy?
100
This is an energy transformation.
What is energy conversion?
100
These fuels are coal, petroleum, and natural gas.
What are fossil fuels?
100
This is the formula for what: work/time.
What is power?
100
Kinetic energy is due to the what of an object?
What is motion?
200
When an object or organism does work on another object, some of its what is transferred to that object.
What is energy?
200
A lamp and clock do this with energy.
What is conversion from electrical energy to electromagnetic energy?
200
This is where fossil fuels came from.
What is the sun?
200
This is the rate at which work is done or the amount of work done in a unit of time.
What is power?
200
The SI unit of work or energy is this.
What is a Joule?
300
This is potential energy that can be stretched or compressed.
What is elastic potential energy?
300
This is when the water at the top of a falls has gravitational potential energy because it is higher than the bottom of the falls. But at as the water falls, its height decreases and so it loses potential energy.
What is energy conversion in a waterfall?
300
This is how the energy of coal is released. It's when potential chemical energy is converted to thermal energy.
What is combustion?
300
This is also called a joule per second (J/s).
What is a watt?
300
Coal stores energy from the sun as this.
What is chemical energy?
400
This is stored in the nucleus of an atom and is released during nuclear reactions.
What is nuclear energy?
400
This states that when one form of energy is converted to another, no energy is destroyed in the process.
What is the law of conservation of energy?
400
This is going to happen because it takes fossil fuels many years to form.
What is become scarce (or going to be hard to come by)?
400
This is the rate at which electrical energy is converted into electromagnetic energy (light) and thermal energy.
What is the power of a light bulb?
400
A 1300- kg car travels at 11 m/s. This is its kinetic energy.
What is 78,650 J?
500
A boulder that weighs 200 N is poised at the edge of a 100-meter cliff. This is its gravitational potential energy.
What is 20,000 J?
500
A roller coaster car with a mass of 500kg is at the top of a hill that is 30m high. Without friction, this is what the kinetic energy would be as it reached the bottom of the hill.
What is 147,000 J?
500
Fossil fuels are made from dinosaur bones. True or false.
What is false?
500
This is equal to 746 watts.
What is a horsepower?
500
A 700 N girl walks down a flight of stairs so that she is 2 m below her starting level. This is the change in the girl's gravitational potential energy.
What is 1400 J?