U1 energy

• Tidal energy is generated by the movement of tides and can be harnessed to generate electricity through tidal power plants.
• Work done = force x distance moved by object
• Wind energy is kinetic energy of the wind.
• Wind energy is generated by the movement of air and can be harnessed to generate electricity through wind turbines.
• Hydropower is generated by the force of moving water and is commonly used to generate electricity through hydroelectric power plants.
• Wind energy is produced when wind turns turbines, which are used to generate electricity.
• Hydroelectricity is generated using water from dams or rivers that turn turbines to produce electricity.
• Energy transfer occurs when one system transfers some or all of its stored energy to another system, resulting in an increase in potential energy (PE) or kinetic energy (KE).
• Kinetic energy is the energy an object has due to its motion.
• Work done is equal to the change in energy of a system.
• Potential energy is the energy an object has because of its position or condition.
• In a closed system, energy remains constant as it is neither gained nor lost.
• Kinetic energy is the energy that objects have due to their motion.
• Solar energy is converted into electrical energy using photovoltaic cells.
• An open system exchanges both matter and energy with its surroundings.
• A closed system is isolated from external influences and does not exchange matter with its surroundings.