Energy Transformations

Front

What is gravitational potential energy (GPE)?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated using the formula GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What does the law of conservation of energy state?

Back

The law of conservation of energy states that energy cannot be created or destroyed; it can only change forms. The total energy entering a system must equal the total energy leaving the system.

Front

What energy transformation occurs in a toaster?

Back

In a toaster, electrical energy is transformed into thermal energy to toast the bread.

Front

What happens during energy transformations?

Back

Energy transformations occur when energy changes from one form to another, such as from kinetic to potential energy or from electrical to thermal energy.

Front

What is elastic potential energy?

Back

Elastic potential energy is the energy stored in objects that can be stretched or compressed, such as springs or rubber bands.

Front

How do you calculate gravitational potential energy?

Back

Gravitational potential energy is calculated using the formula GPE = mgh, where m is mass in kilograms, g is the acceleration due to gravity (approximately 9.8 m/s² on Earth), and h is height in meters.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on an object's position, while kinetic energy is the energy of an object in motion.

Front

What is an example of energy transformation in a light bulb?

Back

In a light bulb, electrical energy is transformed into light energy and thermal energy.

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.