Energy Review

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules. It is released or absorbed during a chemical reaction.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object. It is the energy associated with the motion and position of an object.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation that shows the flow of energy through different levels of an ecosystem, illustrating how energy decreases as it moves up the food chain.

Front

How does energy transfer in an energy pyramid?

Back

Energy is transferred from organisms in one level to those in the level above, with energy decreasing at each successive level.

Front

What happens to chemical energy when a lion eats a zebra?

Back

The lion's body converts the chemical energy from the zebra into mechanical energy to run.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in an object.

Front

How does a kettle convert energy?

Back

A kettle converts chemical energy from natural gas into thermal energy to heat water, and some thermal energy is transformed into sound energy when steam is produced.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses because of its position in a gravitational field, typically related to its height above the ground.

Front

Where is gravitational potential energy greatest in a hydroelectric dam?

Back

Gravitational potential energy is greatest at the highest point of the water, typically at the top of the dam.

Front

What is the primary function of a clothes dryer?

Back

A clothes dryer primarily converts electrical energy into heat and mechanical energy to dry clothes.