The atmosphere

The atmosphere is the air around the Earth.We find rain, cloud, fog and wind in the atmosphere. Earth’s atmosphere makes life possible. All the Earth’s weather happens on the lowest 10km. Of the atmosphere.The atmosphere is made of many gases. It contains water in three forms:a gas, called vapour, ice crystals and droplets. Other gases: Argon, neon, kypton and xenon, and harmful chemicals like nitrogen dioxide.

Oxygen-carbon dioxide cycle

Animals and plants need gases to live. 1. Plants need carbon-dioxide. They get it from air and

water. Plants make oxygen as waste. 2. Animals need oxygen. They get it from air o water.

Animals make carbon-dioxide as waste.

The layers of the atmosphere

1.The troposphere is where weather occurs. You breathe the air in the troposphere.

2.Many airplanes fly in the stratosphere because it is very stable. Also, the ozone layer is there.

3.Many rocks fragment from space burn up in the mesosphere.

4.The thermosphere is very thin. It’s where the space shuttle orbits. It’s got the ionosphere it’s where Auroras happen.

5.The upper limit of our atmosphere is the exosphere. Most satellites orbit here.

Weather

1.Air temperature and pressure. 2.The amount and type of precipitation. 3.The strenght and direction of wind. 4.The types of clouds.

Ozone

This layer absorbs high-energy UV rays from the Sun, protecting.

AURORASThe aurora is formed when particles from the Sun

enter the Earth’s atmosphere

The greenhouse gases

The greenhouse effect is the trapping of heat around Earth.

A tiny number of gases in the atmosphere can trap heat around the Earth. This gases keep the Earth warm.

The traced gases regulate the climate. Water vapour- it’s the most common. It’s the 60% of the natural greenhouse effect.

The greenhouse effect

Not all the heat we feel on Earth comes from the Sun. Most of this heat comes from Earth itself, which is trapped and sent back down by greenhouse gases.

As Earth warms up, it gives heat as low-energy infrared rays.

The greenhouse gases trap most of infrared rays.

Save our planet

1.Why is our planet ill? Because we pollate the air we fill the land with waste and lethal fuel emission for our vehicles.

The three r’s are:Reduce, Reuse and Recycle.

Saving energy

Switching off the lights when leaving a room. Turning off the TV, stereo, video, DVD player

when you’ve finished using instead of leaving standby mode.

Turning down your central heating thermostat by as little as one degree.

Cleaning up the roads

All over the world, the cars, planes… polluted and release a lot of carbon dioxide. Instead, there are cars with hydrogen-powered.

Alternative energy-renewable

The sun’s energy is turned into power by the solar panels.

Natural heat from beneath Eart’s surface is the geothermal energy.

Wind farms and wave power use the sea or air to move the huge turbines

Hydroelectric power stations, flowing water from a dam, generate power.

Fet per: Xavi!!!!!!!!!!!