miércoles, 3 de abril de 2013

UNIT 7. WATER AND AIR ON THE EARTH. The water cycle.

THE WATER CYCLE.

Water on Earth is always changing state and place. This is known as the water cycle.
http://www.epa.gov/ogwdw/kids/flash/flash_watercycle.html

The water cycle.

Explanation of water cycle.

The water cycle.
http://www.youtube.com/watch?NR=1&v=ZzY5-NZSzVw&feature=endscreen
Click


EVAPORATION: when the Sun heats water, water vapour rises.













CONDENSATION: when water vapour cools, it turns into water drop and forms clouds.
Click
















PRECIPITATION: the wind moves the clouds. When the clouds cool, water from the clouds falls as rain. Can be hail, sleet or snow.




















UNIT 7. WATER AND AIR ON EARTH. Freshwater.

FRESHWATER

Did you know that we can't drink all the water on the Earth?
We can only drink clean freshwater. We call this water drinking water.

The greatest, purest drink by far! W-A-T-E-R (Story)

Water facts.


domingo, 10 de marzo de 2013

UNIT 7. WATER AND AIR ON THE EARTH. Wind

Wind is moving air. 


HOT air goes up 



COLD air goes down.

The difference in air temperature causes wind, which moves air from one place to another. This is why clouds move.

Play this video. 





There are different types of wind. 





We can measure how fast the wind is coming with an anemometer.


We can find out the direction the wind is blowing with a weather vane.



martes, 5 de marzo de 2013

UNIT 7. WATER AND AIR ON EARTH


In this unit we're going to learn about air and water on Earth. 

All living things need this. We can't see it, but it's all around us. What is it?

       
 

 


All living things need water and air to live.


WATER
Water is found in many places in and around the Earth.
It's found in three states. 
Three stages song.
Most of the water on the Earth is saltwater, and only a little is freshwater.


FRESHWATER                                                                   SALTWATER
Rivers, lakes, icecaps and groundwater.                              Oceans and seas.
Reservoirs (man-made lakes)


Groundwater speed.


AIR
Plants can't grow without air. People and animals can't breathe without air. Air is found mainly in the atmosphere, which is the layer of gases that surround the Earth.


Air is all around us but we can't see it. 
Air is a mixture of gases.



You can't see air, but you can feel.




WATER and AIR have the same characteristics: they have no smell, no taste and no colours.

 



Air takes up space.

You can see this video.



Does air have weight?

martes, 26 de febrero de 2013

AT THE ZOO.

Here you've got some vocabulary from this unit. 

Oxford University Press English Language Teaching Student's Site

Practice it..... PLAY

And.....do you want to sing?
http://elt.oup.com/student/incredibleenglish/level3/songsandchants_03/songsandchants_03_04/singalong_unit04song?cc=global&selLanguage=en