Understanding Energy Concepts

Front

What is the transformation of energy that occurs when mechanical energy is converted to chemical potential energy?

Back

This transformation occurs in processes such as photosynthesis, where mechanical energy (like sunlight) is converted into chemical potential energy stored in glucose.

Front

What factors can change the gravitational potential energy of an object in relation to the Earth?

Back

The gravitational potential energy of an object changes with its mass and its height above the ground.

Front

What is the unit of measurement for work in physics?

Back

The unit of measurement for work is Joules.

Front

Define work in the context of physics.

Back

Work is defined as a force exerted over a distance to move an object.

Front

How do you calculate potential energy?

Back

Potential energy can be calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object.

Front

What is chemical potential energy?

Back

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

Front

What is the relationship between mass and gravitational potential energy?

Back

Gravitational potential energy is directly proportional to the mass of the object; as mass increases, gravitational potential energy increases.

Front

What is the formula for calculating work done?

Back

The formula for calculating work done is W = Fd cos(θ), where W is work, F is force, d is distance, and θ is the angle between the force and the direction of motion.

Front

What is kinetic energy?

Back

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