3.4 Conservation of Energy

• What is the conservation of energy principle?

  Total energy remains constant
• The conservation of energy principle states that the total energy of an isolated system remains constant
• Energy transformations occur when energy converts from one form to another.


  True
• Kinetic energy is the energy of motion
• Match the energy form with its definition:

  Kinetic Energy ↔️ Energy of motion

  Potential Energy ↔️ Energy of position

  Thermal Energy ↔️ Heat
• Gravitational potential energy can be converted to kinetic energy as an object falls.

  True
• The conservation of energy principle states that the total energy of an isolated system remains constant
• Match the energy form with its definition:

  Kinetic Energy ↔️ Energy of motion

  Potential Energy ↔️ Energy of position

  Thermal Energy ↔️ Heat

  Electrical Energy ↔️ Energy of electric fields
• Energy is neither created nor destroyed but rather transforms from one form to another.


  True
• What is the definition of kinetic energy?

  Energy of motion
• Potential energy is the energy of position
• Gravitational potential energy can be converted to kinetic energy as an object falls.


  True
• What is the mathematical expression for the conservation of energy principle?

  E_{\text{total}} = \text{constant}</latex>
• Order the transformation of energy when an object falls.

  1️⃣ Gravitational potential energy

  2️⃣ Kinetic energy
• Kinetic energy is the energy of motion
• The total energy of an isolated system remains constant
• In an isolated system, energy is neither created nor destroyed but rather transformed.


  True
• What is the mathematical expression for the conservation of energy in an isolated system?

  $E_{\text{total}} =$$\text{constant}$
• The initial energy of an isolated system equals its final energy.
• What type of energy transformation occurs when an object falls?

  Gravitational potential to kinetic
• Match the form of energy with its definition:

  Kinetic Energy ↔️ Energy of motion

  Potential Energy ↔️ Energy of position

  Thermal Energy ↔️ Heat

  Electrical Energy ↔️ Energy of electric fields
• Energy can transform from one form to another within an isolated system without being added or removed.


  True
• In an isolated system, energy can convert between kinetic, potential, thermal, electrical, chemical, and nuclear forms.
• Order the following energy transformations based on the example provided:

  1️⃣ Kinetic to Potential (Throwing a ball upwards)

  2️⃣ Potential to Kinetic (Ball rolling down a ramp)

  3️⃣ Electrical to Thermal (Using a toaster)

  4️⃣ Chemical to Electrical (Battery powering a device)

  5️⃣ Nuclear to Thermal (Nuclear power plant)
• Match the energy transformation with an example:

  Kinetic to Potential ↔️ Throwing a ball upwards

  Potential to Kinetic ↔️ Ball rolling down a ramp

  Electrical to Thermal ↔️ Using a toaster

  Chemical to Electrical ↔️ Battery powering a device

  Nuclear to Thermal ↔️ Nuclear power plant
• The conservation of energy states that the total energy of an isolated system remains constant
• What is the energy of motion called?

  Kinetic energy
• A ball thrown upwards demonstrates the transformation of kinetic energy to potential energy.


  True
• Give an example of electrical energy being transformed into thermal energy.

  Using a toaster
• The conservation of energy states that the total energy of an isolated system remains constant
• What is the definition of thermal energy?

  Heat
• The conservation of energy can be expressed mathematically as E_{\text{total}} = \text{constant}</latex>.

  True
• The conservation of energy can be expressed as $E_{\text{initial}} =$$E_{\text{final}}$, where $E_{\text{final}}$ represents the final energy of the system.
• Why is understanding the conservation of energy crucial in physics?

  For solving energy problems
• The conservation of energy states that the total energy of an isolated system increases over time.

  False
• The conservation of energy states that the total energy of an isolated system remains constant
• Match the form of energy with its definition:

  Kinetic Energy ↔️ Energy of motion

  Potential Energy ↔️ Energy of position

  Thermal Energy ↔️ Heat

  Chemical Energy ↔️ Stored in chemical bonds
• What is the mathematical expression for the conservation of energy?

  E_{\text{total}} = \text{constant}</latex>
• When an object falls, its gravitational potential energy converts into kinetic energy.
• Match the form of energy with its definition:

  Electrical Energy ↔️ Energy of electric fields

  Nuclear Energy ↔️ Energy released during nuclear reactions

  Chemical Energy ↔️ Energy stored in bonds