Photosynthesis

Food chains

Invasive Species

Global Warming

Why is so important biodiversity?

FOOD CHAIN

THE FIVE SENSES CHALLENGUE!

Types of energy

You can print this mindmap to study for the exam

Energy changes

One type of energy can be transformed into another one. 

In this video you will see how kinetic energy (from falling water) is transformed into electricity.

In this one, light energy (from the sun) changes into heat energy (we burn a paper!!)

Watch these videos please!!

Types of energy!

Kinetic energy: produced by things in movement.

Light energy: the sun, the stars, a light bulb, fire...

Electric energy: electric devices use electric energy. A computer, a tv, a phone, a radio, a machine...

Heat energy: something is hot!!!!

Chemical energy: is stored in food, wood, petroleum, gas, oil...

Sound energy: this energy produces sound. A guitar, a piano, a person clapping hands, somebody singing...

Unit 4. Energy

Check out the vocabulary of this unit!