energy transformations

Front

What is energy transformation?

Back

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

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What energy transformation occurs in a pencil sharpener?

Back

Electrical energy is transformed into mechanical energy and then into sound energy.

Front

What are the two energy transformations in photosynthesis?

Back

The two energy transformations in photosynthesis are radiant energy (from sunlight) to chemical energy (in glucose).

Front

What energy transformations occur in a lamp?

Back

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

Front

What is an example of mechanical energy transforming into kinetic energy?

Back

A moving bicycle is an example where mechanical energy (from pedaling) is transformed into kinetic energy (motion).

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as a ball held at a height.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is an example of energy transformation in a hydroelectric power plant?

Back

In a hydroelectric power plant, potential energy of water is transformed into kinetic energy as it flows, which is then converted into electrical energy.