Energy Transfers Flashcards
What are water examples?
Waves, movement of sea water, and hydroelectric power generation
These examples illustrate different aspects of water’s behavior and usage.
What is described by the term ‘hydrographic’?
The study of water bodies and their characteristics
Hydrography involves mapping and analyzing bodies of water.
What is the primary force behind water movement?
Gravity
Gravity plays a crucial role in the dynamics of water flow.
What is hydroelectric power?
Power generated by converting kinetic energy from moving water
This process utilizes the energy of flowing water to produce electricity.
What does ‘kinetic energy’ refer to?
The energy possessed by an object due to its motion
Kinetic energy is a key concept in understanding energy conversion in water movement.
Fill in the blank: Hydroelectric power generation converts _______ energy into electricity.
kinetic
This conversion is essential for producing renewable energy.
What is a benefit of hydroelectric power?
It produces renewable energy and reduces carbon emissions
Hydroelectric power is considered a clean energy source.
What is a disadvantage of hydroelectric power?
It can disrupt local ecosystems and water flow
Environmental impacts are an important consideration in hydroelectric projects.
What role do turbines play in hydroelectric power systems?
They convert the kinetic energy of water into mechanical energy
Turbines are crucial components in the energy conversion process.
True or False: Hydroelectric power generation does not produce greenhouse gases.
True
This is one of the reasons hydroelectric power is favored as a clean energy source.
Define gnd and give examples of conductors and insulators.
Gnd refers to a reference point in an electrical circuit. Examples of conductors:
* Copper
* Brass
* Silver
Examples of insulators:
* Rubber
* Plastic
What is specific heat capacity?
The energy required to raise the temperature of a unit mass of a substance by one degree Celsius.
Give the equation for specific heat capacity.
Q = mcΔT
Describe the changes in the behavior of the particles in a material as the temperature of the material increases.
Particles move faster and spread apart as temperature increases.
State some design features which can be used to reduce heat loss from your home.
Features include:
* Insulated walls
* Double glazing
* Draft proofing
How does a fossil fuel power station work?
Fossil fuels are burned to heat water, producing steam that drives turbines to generate electricity.
List the other types of energy generation options.
Options include:
* Nuclear
* Solar
* Wind
* Hydro
* Biomass
Define the terms renewable and non-renewable energy.
Renewable energy is sourced from natural processes that are continuously replenished. Non-renewable energy is sourced from finite resources that do not replenish within a human timescale.
State some advantages and disadvantages of one renewable source and fossil fuels.
Solar energy advantages:
* Sustainable
* Low pollution
Disadvantages:
* High initial costs
* Weather dependent
Fossil fuels advantages:
* High energy output
Disadvantages:
* Environmental pollution
* Finite resource
True or False: Electricity from a power station is transferred to homes through transmission lines.
True
Fill in the blank: The energy transferred to raise the temperature of a substance is called ______.
[specific heat capacity]
