Electricity Power

The disadvantage of hydroelectric power station.

• The highest initial cost compared to other types of plant.

• It involve high capital cost due to construction of dam. 

• There is a problem in starting the unit.

• The overall efficiency is low (20%).

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-3

Which of the following is a finite resource used for generating electricity?

• Solar power

• Wind power

• Coal

• Hydroelectric power

Which of the following is an unlimited resource for generating electricity?

• Natural gas

• Oil

• Coal

• Wind power

What is the first step in generating electricity according to the video?

• Distributing electricity

• Mining, harnessing, or collecting natural resources

• Flipping a switch

• Using a generator

Which of the following is NOT mentioned as a natural resource for generating electricity?

• Ocean tides

• Mountain winds

• Geothermal energy

• Natural gas

What is required to turn on a light bulb besides a natural resource?

• A strong breeze

• A lump of coal

• A system to generate and deliver electricity

• A battery

What is the role of natural resources in electricity generation?

• They are used directly to power homes

• They are mined, harnessed, or collected to generate electricity

• They are stored in batteries for later use

• They are used to cool down power plants

Tags

NGSS.MS-PS3-4

What is the main message of the video?

• Electricity is easy to generate

• Turning on a light bulb is simple

• Generating and delivering electricity is a complex process

• Natural resources are unlimited

a device that converts mechanical energy to electrical energy

• lever

• motor

• pulley

• generator

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS3-3

a device that converts electrical energy to mechanical energy

• generator

• motor

• lever

• wedge

Tags

NGSS.MS-PS3-5