Energy

• Wind energy is generated by the movement of air and can be harnessed to generate electricity through wind turbines.
• The energy transferred from one place to another is called power
• Work done = force x distance moved by object
• Potential energy is the energy stored in an object due to its position or configuration.
• Energy is the ability to do work
• Kinetic energy is the energy of motion.
• Power = work done / time taken
• Energy transfer occurs when there is a change in position, shape or state of matter
• Kinetic energy is stored in moving objects due to their motion
• Power (P) = work done / time taken
• Energy transfer occurs when there is a change in an objects speed, shape or position
• Chemical energy is released during chemical reactions, such as burning fuel or digesting food.
• Electrical energy is produced when electrons move around a circuit, creating electrical current.
• Kinetic energy is the energy possessed by an object due to its motion.
• Power is the rate at which energy is used up or produced, measured in watts (W) or kilowatt hours per hour (kWh/h).
• Heat energy is the energy that objects have because they are hot.
• Power is the rate at which energy is used up, measured in watts (J/s).
• A unit of kinetic energy is joules (J)
• A unit of potential energy is also joules (J).
• The law of conservation of energy states that energy cannot be created nor destroyed but can only be transferred from one form to another
• The greater the speed of an object, the more kinetic energy it has
• The unit of power is watts (W)
• Average speed = total distance travelled / total time taken
• The formula for power is P=W/t where W is work done and t is time taken
• A car engine converts chemical potential energy into mechanical energy
• Gravitational potential energy is the energy stored by an object because it has been lifted up against gravity.
• Gravitational potential energy is the energy that comes from gravity pulling two objects together.
• The formula for power is P= W/t, where P is power, W is work done, and t is time taken.
• Average power is calculated by dividing total work done by total time taken.
• Potential energy is the energy stored in an object due to its position or state.
• A joule is equal to one newton metre.
• 1 Watt = 1 Joule per second
• Energy can be transferred from one place to another without being lost if it is converted into different forms.
• Work done by a force = change in potential energy + change in kinetic energy
• When a force acts through a distance it causes a displacement of an object
• Kinetic energy is the energy that an object possesses due to its motion.