Energy

What is energy?

Energy is the capacity to do work or produce change.

What are the different forms of energy?

Energy exists in various forms such as kinetic, potential, thermal, chemical, and nuclear energy.

What does the law of conservation of energy state?

Energy cannot be created or destroyed, only converted from one form to another.

What are the two general types of energy?

Kinetic energy and potential energy.

What is kinetic energy?

Kinetic energy is the energy of an object due to motion.

What factors affect kinetic energy?

Kinetic energy depends on an object's mass and speed.

What is potential energy?

Potential energy is the energy that an object has due to its position, condition, or chemical composition.

What is gravitational potential energy?

Gravitational potential energy is potential energy resulted from an object’s position.

Can an object have both potential and kinetic energy?

Yes, an object can possess both potential and kinetic energy simultaneously.

What is mechanical energy?

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

What is thermal energy?

Thermal energy is the total kinetic energy of all particles in a substance.

What is heat?

Heat is the energy transferred from an object at a higher temperature to an object at a lower temperature.

What are the three ways heat can be transferred?

Conduction, convection, and radiation.

What is conduction?

Conduction is the transfer of heat from one substance to another through direct contact.

What is convection?

Convection is the transfer of energy as heat by the movement of a liquid or gas.

What is radiation?

Radiation is the transfer of energy by electromagnetic waves.

What is a renewable resource?

A renewable resource is an energy source that can be easily reproduced or replaced by nature.

What is a nonrenewable resource?

A nonrenewable resource is an energy source that cannot be produced or restored as quickly as it is used.

What is fossil fuel?

Fossil fuels are energy resources made from carbon-rich plant and animal remains.

What is acid rain?

Acid rain forms when sulfur dioxide and nitrogen oxides combine with water in the air.

What is nuclear energy?

Nuclear energy is released when an atom’s nucleus breaks apart, or when the nuclei of two small atoms join together.

What is geothermal energy?

Geothermal energy is extracted from heat stored within the Earth.

What is biomass?

Biomass is a renewable resource that includes living or recently dead organic material used as fuel.

What is the kinetic theory of matter?

The kinetic theory states that all particles that make up matter are constantly in motion.

How does temperature relate to kinetic energy?

Temperature is a measure of the average kinetic energy of all the particles in an object.

How is heat measured?

Heat is measured in calories (cal) and joules (J). One calorie equals 4.18 joules.