Exam: Forms, Conversions, Electricity, Thermo, & Waves

Front

What is energy?

Back

The ability to do work; The ability of a system to do work or produce heat; The capacity to change matter

Front

What is the Standard metric unit used for measuring Energy?

Back

Joule (J)

Front

The total amount of all energy in the universe is ________.

Back

always the same

Front

A stretched rubber band has _____________________ potential energy.

Back

elastic

Front

Has the ball on the hill started rolling based on the graph?

Back

Yes, because there is some kinetic energy

Front

Potential energy of a 1.0 kg book on a 2.5 m high shelf?

Back

25 J

Front

Gravitational potential energy depends on which two factors?

Back

mass and height above the ground

Front

Equation for calculating an object's gravitational potential energy.

Back

PE = mgh

Front

nuclear energy

Back

The potential energy stored in the nucleus of an atom

Front

What determines whether or not an energy source is efficient?

Back

The amount of energy "lost" during transitions determines efficiency. The less energy that is changed to heat, the more efficient the source.