Inside Earth by dpark13

Video 1.3

Haterz_be_hatin — 2014-03-05 17:02:18 UTC

Bill Nye The Science Guy on Plate Tectonics and the Earth's Crust! "

What Evidence Supports Wegener's Theory?

Haterz_be_hatin — 2014-03-05 18:00:45 UTC

First of all, Wegener's theory was that all of the present continents were once a huge super contintent called Pangaea. Pangea was made of Africa, South America, North America, Eurasia, Australia, India, and Antartica. He got the idea of it when he saw that that South America and Africa fit together perfectly. This is strong evidence. Another piece of evidence is the fossils, or any trace of an ancient organism that has been preserved in rock, of the same types of life on different continents. The animals could not have traveled over vast oceans that presently exist. This had to have happened from animals spreading all over a supercontinent. This lead to the possibility of a land bridge. Wegener believed that Pangaea was originally near the south pole; the centrifugal force of Earth caused the supercontinent to break apart. Then the continents drift towards the equator creating the current landscape of the earth.

Diagram 1.3

Haterz_be_hatin — 2014-03-05 18:17:44 UTC

This shows the movement of the continents.

Video 1.2

Haterz_be_hatin — 2014-03-17 15:15:09 UTC

Summary of 1.2

Haterz_be_hatin — 2014-03-17 15:15:23 UTC

There are three types of heat transfer: radiation, conduction, and convection. Radiation is the transfer of heat through space. Conduction is the transfer of heat through materials touching. Convection is the transfer of heat through liquids. Convection current is the flow that transfers heat within a liquid. Convection currents occur in the mantle of the Earth, and moves plates and causes continental drift. Other things contribute to continental drift, but convection currents are the biggest factor.

Diagram 1.2

Haterz_be_hatin — 2014-03-17 15:16:03 UTC

Divider

Haterz_be_hatin — 2014-03-18 12:15:32 UTC

Divider

Haterz_be_hatin — 2014-03-18 21:31:17 UTC

1.1 Questions

Haterz_be_hatin — 2014-03-18 21:32:10 UTC

It is hard to determine Earth's inner structure, because we can not dig through the crust. oceanic crust is mainly made of basalt.

Seismec waves are used to provide evidence about Earth's interior by showing where a earthquake can be felt.

Earth's three main layers are the crust, mantle, and core.

The lithosphere is part of the crust, and the asthenosphere is part of the mantle.

Solid layers include: the lithosphere, the inner core, and the lower mantle. Solid but able to flow slowly layers include: the asthenosphere and the the outer core.

Video

Haterz_be_hatin — 2014-03-18 21:58:37 UTC

Diagram

Haterz_be_hatin — 2014-03-18 22:00:14 UTC

Question of the Day

Haterz_be_hatin — 2014-03-21 14:07:59 UTC

List the three types of plate boundaries and explain the movement and landforms associated with each type.

1. Divergent. Splits the plates apart. creates rift valleys on land and mid ocean ridges.

2. Convergent. When two plates collide head on. In the ocean they create subduction zones and volcanoes; on land they make mountain ranges.

3. Transform. When two plates slide past each other.

1.5 Thinglink

Haterz_be_hatin — 2014-03-21 17:28:43 UTC

Chapter 3

Haterz_be_hatin — 2014-04-11 13:54:07 UTC