INTRODUCTION
Our planet is really special. It is the only known planet which contains life. Today we are learning why the Earth is such an amazing planet.
TASK
Some links are given. You have to explore them in order to learn our planet's characteristics, and also to do the exercises in your sheet.
WHAT ARE THE SPHERES?
The Earth's spheres
Complete the sentences.
a. The Earth is made up of four interrelated parts or _____________.
b. The spheres in this complex system are called: _______________, _______________, _______________, and _________________.
Write two examples of each sphere.
| SPHERES | Example 1 | Example 2 |
| ... | ... | ... |
| ... | ... | ... |
| ... | ... | ... |
| ... | ... | ... |
UNDER YOUR FEET.
The Earth's interior
1. Label this picture of the Earth’s structure.
2. True or false? Say why if false.
a. The geosphere is divided in three main layers.
b. Inner core is liquid.
c. Crust moving plates are in the astenosphere.
SOMETHING IS IN THE AIR
Composition of the atmosphere
Answer these questions.
a. What is the atmosphere composition?
b. How is oxygen produced?
The Greenhouse Effect
SOURCES
http://imperiodelaciencia.files.wordpress.com/2012/08/photograph10_fs.jpg
http://usmanscience.com/exams/10science/chapter-12-hw_files/image001.gif
http://www.aeronomie.be/multimedia/images/research/earthsystem-creditsbristoluniversity.jpg
Essential Natural Science 1. Santillana.
https://www.classzone.com/books/earth_science/terc/content/investigations/es0103/es0103page02.cfm
http://www.learner.org/interactives/dynamicearth/structure.html
http://www.kidsgeo.com/geography-for-kids/0042-composition-of-the-atmosphere.php
http://www.geo.txstate.edu/lovell/contentParagraph/04/content_files/file/Earthrise-3895-cropped.jpg
LITHOSPHERIC PLATES
The lithosphere is not a continuous layer, it is fragmented into pieces called lithospheric plates, or tectonic plates. They move over the mantle, occuring various deformations as they interact.
