THE CHANGING EARTH.  HOW HUMAN AND WILDLIFE HABITATS CHANGE

(CS-6.science2d)

What are some of the natural forces which change the earth which we humans share with other creatures?  Certainly earthquakes are one of these forces.

EARTHQUAKES

Click the image to hear the earthquake

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Visit The Worldbook Encyclopedia to read more about earthquakes.

VOLCANOES

Another world changing force is the volcano.  Volcanoes can spit out lava which can change both human and wildlife habitats.

The famous Mt Etna volcano.  Click it to hear the lava.

Visit VOLCANOWORLD to learn more about volcanoes.

LANDSLIDES

Landslides are another force which can alter the landscape very fast.  Landslides occur when a sloped surface becomes unstable because of water flowing under it or possibly because of earthquakes.  The surface becomes mobile and moves downhill resulting in what we call a landslide.

A road swept away by a landslide.

Here is a US Search and Rescue Task Force web site which goes into detail about the causes of landslides.

FLOODS

Floods also change habitats.  A flood occurs when a river overflows its banks after being filled beyond its capacity by rain.  Floods can ruin houses and cars and sweep animals and property away.

Effects of a flood.

Would you like to learn more about floods and their opposite, droughts?  Visit this web site.




That's the end of the web lesson.  Hope you enjoyed it.