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Assignment:
1. Use the map key and the compass rose to formulate descriptive sentences about key physical features of each continent.
Large continents have big arids and mountains. North Americahas alot of grassland and on the west it has arids and mountains.
South America has evergreen forest and about 40% of grassland with mountains on the west coast.
Africa has big arid areas and in themiddle evergreen forests.
Europe has small mountain areaas and grassland.
Asia has alot of mountains on the east side and mixed forest.
Australia is mostly Arid and mountains on the east coast.2. Name the different kinds of bodies of water shown on the map.
Oceans
Rivers
Gulfs
Lakes
Seas

3. Find information to answer this questions:
a) How do internal and external forces changethe physical makeup of Earth?
- Research such physical phenomena as:
Earthquakes- Soil liquefaction occurs when, because of the shaking, water-saturated granular material (such as sand) temporarilyloses its strength and transforms from a solid to a liquid. Soil liquefaction may cause rigid structures, like buildings and bridges, to tilt or sink into the liquefied deposits. This can be adevastating effect of earthquakes.
Volcanoes- Volcanic eruptions can also create new islands, as the magma cools and solidifies upon contact with the water.
Weathering- The materials left over after the rockbreaks down because of weathering combined with organic material creates soil. The mineral content of the soil is determined by the parent material, thus a soil derived from a single rock type canoften be deficient in one or more minerals for good fertility, while a soil weathered from a mix of rock types (as in glacial, aeolian or alluvial sediments) often makes more fertile soil.
Erosion,etc-A certain amount of erosion is natural and, in fact, healthy for the ecosystem. For example, gravels continuously move downstream in watercourses. Excessive erosion, however, causes serious...
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