Energy from the earth
What is energy and why do we need it?
Over time, energy has come to mean many things to us. In physical science, energy means the ability to do work. Work means a change in position, speed, state, or form of matter. Therefore, energy is the capacity to change matter.
Everything we do involves energy. Getting up, going to school, and doing chores require energy. In fact, everything that happens in the universe, from the eruption of volcanoes, to the sprouting of seed, to the moving of people, takes energy. When we turn on a motor, drive a car, cook on a stove or switch on a light, we are using energy.
Why do we need energy?
We need energy for lights, electronics, electricity, technology, electric cars, cooking, washing and being able to have a wash in the shower. Banks today also use a lot of electricity, with the credit cards. If we did not have energy we would not be able to use all these things!!!
What do we use to provide our energy at the moment?
We can get energy in many different ways. We can get electricity from the sun, the wind and water. But many companies are digging up fossil fuels to make electricity. This is destroying our planet by the minute. Our oceans are rising, our air is getting filled with bad green house gases. If we don't react now our planet with change, and not for the better, but for the worst. We should be using solar powered energy and wind powered energy and not destroy Earth!
What are fossil fuels?
Climate change problems
Where do we get fossil fuels?
What happens when we burn them?
What are the effects on the environment ?
This due to the green houses gases destroying the ozone layer. The ozone layer has a hole up near the Arctic and the sun is burning the ice. Many animal live on the ice that is being burnt.
Green house gases
When a factory burnt fossil fuels it lets out a gases called green house gases. These gases are making holes in the ozone layer.
We burn fossil fuels for electricity. But we also use it for petrol. Fossil fuels are made of old trees or fossils that have been made into coal.
Green house gases
What are the effects on the climate?
What can we do to reduce our reliance on fossil fuels?
- 300 years of fossil fuels in 300 seconds
- BBC news