S Energy Flashcards
What is energy
Its is the ability to do work
What is potential energy
This is the energy that an object has due to its position or shape
What is kinetic energy
This is the energy of an object that is in Motion
What is chemical energy
Energy may be stored in chemicals like food fuels and explosives
what is light energy
Most of the energy present on earth originated from the sun. light from the sun provides energy for plants to grow make food and oxygen for us
What is heat energy
When energy is given to an object, the temperature of the object may increase. The particles that make up the object move around more when they get hot
What is electrical energy
It is very convenient because it’s easily converted into other forms of energy.
What is sound energy
It is a form of kinetic energy created when objects vibrate
What is nuclear energy
The nucleus of an atom has an enormous amount of stored energy. When the nucleus is disturbed the atom may release this energy
What is energy conversions
Energy can be changed from one form to another. whenever energy is converted the total amount of energy that is lost in one form will be equal to the amount of energy created in it’s new form
Why do we say energy is conserved
We said that energy is conserved. Is it because energy cannot be created or destroyed
Definition the principle of conservation of energy
Energy cannot be created or destroyed but only changed from one form to another
list of energies
Nuclear, light, heat, electrical, sound, kinetic, potential, chemical
What is our most important source of energy
The sun is our most important source of energy
what are fossil fuels made of
They are made of dead plants and animals have been converted to feuls over millions of years
What are fossil fuels made of
They are made of dead plants and animals have been converted to feuls over millions of years
What does The Heat Of The Sun do for us
He keeps us warm and from freezing to death. It keeps plants alive and grows them
How does the sun cause wind and waves
The sun heats up the land and air. This causes wind and waves. The wind and waves can be used to generate electricity
Whys the sun’s energy necessary for hydroelectricity
The sun’s energy is necessary to evaporate water to make rain. Rainforest rivers that are used to generate hydroelectricity
What converts sunlight to heating and electricity
Solar panels and solar cells converts sunlight to heat and electricity
What is renewable energy
A renewable energy source will never be used up
What is non-renewable energy
Non-renewable energy source will not be regenerated in our lifetime
Fossil fuels advantages
Easy to store and transport, relatively cheap, energy is available when needed
Fossil fuel disadvantages
They will eventually be used up, fossil fuels that are imported are very expensive, they cause global warming, burning fossil fuels cause acid rain which can kill fish and trees
