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Sections

  • 1

    What Is Energy?

    Energy is the capacity to do work and exists in various forms, continually being transferred and transformed.

    Learning Practice

  • 1.1

    Definition Of Energy

    Energy is the capacity to do work and can exist in various forms.

    Learning Practice

  • 1.2

    Si Unit Of Energy

    The SI unit of energy is the Joule, defined as the amount of energy transferred when a force of one newton is applied over a distance of one meter.

    Learning Practice

  • 2

    Types Of Energy

    This section explores various forms of energy, including kinetic, potential, thermal, chemical, electrical, and nuclear energy.

    Learning Practice

  • 2.1

    Kinetic Energy (Ke)

    Kinetic energy is the energy possessed by an object due to its motion, and it increases with the object's mass and velocity.

    Learning Practice

  • 2.2

    Potential Energy (Pe)

    Potential energy is stored energy that has the potential to do work, arising from an object's position or state.

    Learning Practice

  • 2.2.1

    Gravitational Potential Energy

    This section discusses gravitational potential energy, its formula, and its significance in relation to an object's height in a gravitational field.

    Learning Practice

  • 2.2.2

    Elastic Potential Energy

    Elastic potential energy is the stored energy in objects that can be stretched or compressed, such as springs and rubber bands.

    Learning Practice

  • 2.3

    Thermal Energy

    This section introduces thermal energy, discussing its definition and relation to temperature and particle motion.

    Learning Practice

  • 2.4

    Chemical Energy

    Chemical energy is the energy stored in the bonds of chemical compounds and is released or absorbed during chemical reactions.

    Learning Practice

  • 2.5

    Electrical Energy

    Electrical energy is a form of energy associated with the movement of electric charge, powering many modern devices.

    Learning Practice

  • 2.6

    Nuclear Energy

    Nuclear energy is the energy released during nuclear fission or fusion, utilized in nuclear power plants for energy generation.

    Learning Practice

  • 3

    Law Of Conservation Of Energy

    The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed or transferred.

    Learning Practice

  • 4

    Energy Transfer And Transformation

    Energy can be transferred or transformed through work and heat transfer.

    Learning Practice

  • 4.1

    Work

    Work is the measure of energy transfer when a force causes movement.

    Learning Practice

  • 4.2

    Heat Transfer

    This section explores the processes of heat transfer through conduction, convection, and radiation.

    Learning Practice

  • 4.2.1

    Conduction

    Conduction is the process of heat transfer through materials via direct contact.

    Learning Practice

  • 4.2.2

    Convection

    Convection is the process of heat transfer through the movement of fluids, where warmer areas rise and cooler areas sink, creating a continuous flow of heat.

    Learning Practice

  • 4.2.3

    Radiation

    Radiation involves the transfer of energy through electromagnetic waves, playing a vital role in energy transmission and various physical phenomena.

    Learning Practice

  • 5

    Energy Efficiency And Sustainability

    This section covers the concept of energy efficiency, its importance in sustainable practices, and introduces renewable energy sources as alternatives to non-renewable energy.

    Learning Practice

  • 6

    Applications Of Energy

    This section explores the various applications of energy in transportation, power generation, daily life, and space exploration.

    Learning Practice

  • 6.1

    Transportation

    Transportation involves the conversion of chemical energy into kinetic energy for movement.

    Learning Practice

  • 6.2

    Power Generation

    Power generation involves converting various forms of energy into electrical energy using different technologies.

    Learning Practice

  • 6.3

    Daily Life

    Energy plays a crucial role in our daily lives through various applications like transportation, power generation, and household use.

    Learning Practice

  • 6.4

    Space Exploration

    Space exploration utilizes energy in various forms to propel spacecraft and power satellites.

    Learning Practice

References

10 IB physics ch2.pdf

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