Geography Chapter 2 /Lesson 2
human actions
anything humans do to change the Earth mining strips the land cars cause air pollution digging canals cutting down forests
If a volcano erupts or the surface plates move suddenly under the ocean floor
Energy is transferred to earth's surface through the water creating a tsunami
Buildup and movement
a buildup of materials to create landforms sandy beaches are formed by waves, rivers deposit soil where they empty into lakes and oceans island,
Tsunami
a giant ocean wave caused by volcanic eruptions or movement of the earth UNDER THE OCEAN FLOOR
glacier
a large body of ice that moves slowly across land smallest of the ice masses
continent
a large, unbroken mass of land
Ring of Fire
a long band of Volcanos 24,000 miles long surrounding the Pacific Ocean
surface plates that make up Earth's crust move and shift over millions of years-SLOWLY cause....
creates landforms like mountains, volcanoes and deep trenches in the ocean floor
ice sheets
extend more than 20,000 square miles over Greenland and Antarctica
List in order of size the masses of ice and snow
largest-ice sheets then ice caps then glaciers
Different rocks erode at different rates
soft rock is eroded and weathered faster than dense rock
What is the difference between weathering and erosion?
...
The surface plates move suddenly along fault lines
Create and earthquake and can also create a volcano
tectonic plates are parts of what layer of Earth?
Crust
weathering
Process by which Earth's surface is worn away byNATURAL FORCES- wind, rain, chemicals movement of ice, flowing water or plants
erosion
Process by which weathered bits of rock are moved by wind,water ice Works with weathering to change surface features of EArth
fault
a place where two tectonic plates grind against each other
earthquake
a shaking or trembling of Earth, caused by the collision of tectonic plates or can occur when volcanoes erupt
tectonic plate
one of the 16 pieces of Earth's CRUST
Humans have damaged Earth's surface quickly and these changes threaten
safety and survival
What are two causes of earthquakes
volcanoes or collsion of tectonic plates
Ice caps
high altitude ice masses
Humans have change the environment of Earth faster and more completely because
of demand for food and natural resources grows with increase in population.
Large masses of ice and snow can form
valleys and plains
Why don't we feel the ground moving under us as the tectonic plates are moving
very slow movement inches per year and millions of years to see change and to create a new landform
what are some forces that can change the earth's surface
weathering ,erosion, buildup and movement and human actions
