Electrical Power

​Welcome and Mabuhay!!!

Learning Objectives:

1. Trace the energy transformation in electrical power plants;

2. explain how electrical energy reaches the consumers;

3. Distinguish among electrical power generation, distribution, and transmissionand

4. Cite ways on how to conserve electrical energy at home.

Recap

​Waste heat Work Steam Heat engine Input heat Internal Combustion engine External Combustion engine

1. __________converts thermal energy to mechanical energy to do work.
2. In geothermal power plant, _______ turns the turbine which is connected to a generator to generate electricity.
3. Heat can do ______ by transforming into mechanical energy.
4. __________ is added to the engine by an external source called hot reservoir.
5. One of the two major types of heat engine is the _______________where the fuel combustion takes place outside the engine, like steam engine.

Open Ended

What are the different sources of energy which are utilized to provide

electricity to households and the entire community?

Geothermal Power Plant

Nuclear Power Plant

Hydroelectric Power Plant

Wind Farm (Wind Energy)

Coal-Fired Power Plant

Solar Power Plant

Two Kinds of Energy Sources

In your Grade 7 TLE, you were able to learn about electrical supplies, materials, and tools. But, before electricity reaches the community, including your home, it undergoes series of processes.

These include generation, transmission, and distribution.

Group Activity

Dancer 1 - Activity 1: The sources, devices, and transformations of energy.

Dancer 2 - Activity 2: What am I?

Singers & Musicians - Activity 3: Electrical Path

Artists - Activity 4: How electrical energy reaches the consumers.

Group Presentation

Put a number sequence on the space provided to connect and show the correct electrical path.

Complete the statement below by filling up the blanks with the following words:

transformer, generation, transmission, distribution, and electricity

Every day, we are surrounded by one of the most important innovations of all time, the (1) ______________. (2) ________________ of electricity from power plants is a major factor that can be done by transmission and distribution lines. (3) _______________ lines are a high voltage line that carries electricity from power plant to the substation from it is further distributed to various areas for different purposes. (4) ____________ lines are low voltage lines that carry electricity from the substations to the end users for residential and commercial use.(5) _____________ on poles stepdown electricity before it enters houses.

Electrical energy is an indispensable part of our everyday activities. Without electricity, life is very challenging. Can you cite some ways how to conserve electricity at home?

Let's wrap up!

Quiz Time

https://docs.google.com/forms/d/e/1FAIpQLScIrsySG_mU_az_xEaI5dr31rvULNx2rTf0c76URFo5mQcgfw/viewform?usp=sf_link

Multiple Choice

Which of the following energy resources use heat from Earth's interior to produce steam that turns large turbines to generate electricity?

• Geothermal

• Hydro power

• Solar power

• Wind power

Multiple Choice

Geothermal and hydroelectric power plants produce electricity using heat and water, respectively. What is the energy transformation that takes place in electrical power plants?

• thermal energy to kinetic energy
      

• electrical energy to kinetic energy
      

• chemical energy to electrical energy
  

•      mechanical energy to electrical energy

Multiple Select

Which of the following is a device that increases or decreases electromotive force input which is also consists of coils, magnet, and iron core?

• Breaker

• Generator

• Transformer

• Motor

Multiple Choice

How does electrical energy reach consumers?

• power plant- step up transformer- transmission lines- step down

  transformer- distribution lines- step up transformer- consumers

• power plant- step up transformer- transmission lines- step down

  transformer- distribution lines- step down transformer- consumers

• generation facility- step up transformer- transmission lines- step

  up transformer- distribution lines- step up transformer- consumers

• generation facility- step down transformer- transmission lines- step

  up transformer- distribution lines- step up transformer- consumers

Multiple Select

Your room has an electric fan, air conditioner, and paper fan. Being an advocate of conserving  electricity, which should you use?

• Paper fan   

• Electric fan   

• Air conditioner   

• Paper and electric fan

Goodbye everyone.

See you around.