Download
1 / 8
80 likes | 199 Vues
This comprehensive overview explores how Earth's surface is shaped and reshaped through various processes, including chemical weathering, physical weathering, erosion, volcanic activity, and earthquakes. Chemical weathering alters rocks through reactions with water and acid rain, while physical weathering breaks them into smaller pieces, often aided by plants and glaciers. Erosion refers to the movement of weathered materials, while volcanoes and earthquakes significantly transform the landscape by causing rapid changes. Discover the dynamic forces that continually reshape our planet!
E N D
Erosion How Does Earth’s Surface Shaped and Reshaped Chemical weathering Volcano By : Jacquelyn Tsui Fourth Grade 2012 - 2013 Earthquake
Earth’s Surface Is Shaped By • Chemical Weathering • Physical Weathering • Erosion • Volcanoes • Earthquakes
Chemical Weathering • During chemical weathering , chemicals cause rocks to change into different materials and break down . • Acid rain weathers rock material on Earth’s surface. • Water and warm temperatures are important for chemical weathering .
Physical weathering • In physical weathering , rocks are broken into smaller pieces . • Weeds and other plants can also grow in cracks in rocks . • Glaciers can also cause physical weathering
Erosion • Sometimes the rock stays where it is . • Sometimes it is picked up and carried away to other places . • Erosion = the movement of weathered materials .
Volcanoes • A volcano can rapidly change Earth’s surface • Volcano = a cone shaped landform that forms at a weak spot in Earth’s crust where magma reaches the surface . • The volcano erupts when magma reaches the surface . • Sometimes , the magma oozes upward and flows from the volcano .
Earthquakes • Earth’s outer layer , is on top of another layer called the upper mantle • Fault = a break or crack in rocks where Earth’s crust can move • Earthquake = a sudden movement that causes Earth’s crust to shake • The vibrations of an earthquake move as waves that travel through Earth .
