Bell work 9-2-111. What is the name of the longitude line 180*?2. What is the surface features of a place?a. topography b. Time Zones c. Prime Meridian d. I.D.L3. What is used to begin lines of longitude?a. topography b. Time Zones c. Prime Meridian d. I.D.L
Plate TectonicsEarths crust is divided into huge sections called plates.These plates are constantly moving. They move from 1-4 inches each year.Fault lines are found along plate boundaries.
Earth is like a chocolate dipped Ice Cream Cone
3 Types of Plate Movements1. Away from each otherFound underneath oceans2. Towards each other3. Side by side
Plates move away from each other1. Sea floor opens up2. Hot molten rock fills the opening3. Builds up to form a mountain chain called a Mid-Ocean Ridge.4. Eventually forms Islands
Islands forming in the Caribbean Sea
Plates move towards each otherSubduction the heavy plate goes under the lighter plate and pushes it up. This forms high mountains that are often volcanic.An example of this is the Himalayan Mountains
Plates move side by sideThe land crumples to form low mountains (often volcanic)An example of this type of movement is the San Andreas fault in California.It is also why Baja California is separated from mainland Mexico. (see page 588)