24-25 Energy Study Guide

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 heat energy?

Back

Heat energy, or thermal energy, is the energy that comes from the temperature of matter. It is the energy that is transferred between objects due to a temperature difference.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, an object at a height has gravitational potential energy.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, demonstrating the conversion of energy.

Front

What is the energy transformation in an alarm clock when it goes off?

Back

The energy transformation in an alarm clock is from electrical energy to mechanical energy to sound energy.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed of an object. Doubling the speed increases the kinetic energy by four times.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for potential energy?

Back

The formula for gravitational potential energy (PE) is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is energy transformation?

Back

Energy transformation is the process of changing energy from one form to another, such as from potential energy to kinetic energy.