Forms Of Energy Flashcards
What are the two main groups of energy?
Energy in ACTION
STORED energy
What is light energy?
Light energy from the sun makes plants grow and burns your skin. It can be focused to make a photograph on film in a solar barbecue.
What is kinetic energy?
Any moving object has kinetic energy.
What is sound energy?
Sound energy is a special type of energy. It is the energy of sir when it vibrates (moves to and fro). Small amounts of sound energy can cause hear sounds. Large amounts can break a window of even a whole building.
What is heat energy?
Heat is a form or energy because it makes things happen. Example, heat from burning coal make a steam engine go and the steam in a kettle can make a whistle blow.
What is electrical energy?
This the energy pushing an electrical current through the a conductor. It makes light work, runs computers, hair driers television sets etc.
What is energy?
Energy is what makes things happen. Nothing can live, move and grow or give off light heat or sound without energy.
What do cars and machines need to work?
Fuel.
We have to work during the day and to do this we need ____.
Energy
How do we get energy?
From the food that we eat.
What does energy mean to a scientist?
The ability to do work.
What are places where energy is stored called?
Sources of energy
We come into ____ with sources of energy everyday. We get food from the supermarkets , petrol from the garage and gas through pipes.
Contact
What is our main source of energy?
The sun
What does the sun do?
Radiates energy in the form of light and heat.
What is the process called where green plants use the energy from the sun to make food?
Photosynthesis
What happens after photosynthesis?
Plants then eat the plants, then they use some of the energy and store the rest.
What is also used to heat our homes and pools?
Solar energy
What does wind energy do?
From the earliest centuries wind energy has been used by people to sail boats on water, carrying people and cargo and to pump water using windmills.
What is the energy of falling water used for?
To turn water-wheels and grind mealies.
What is falling water at waterfalls , power stations at large dams used for?
To turn dynamos.
What are in these dynamos?
A copper wire spool moves between two magnets and generates electrical energy or electricity.
What help power ships and steam engines?
Hot water and steam.
Electricity can be also produced by using the power of falling water such as ____ and ____ dams. This is called ______ power.
Waterfalls
Artificial
Hydroelectric
