Earth's Layers
Earth's layers consist of these 2 metals.
What is iron and nickel?
This sphere contains air and other substances above the surface.
What is the atmosphere?
As early as the 1600's people looking at maps noticed that several continents seemed to fit together. The name given to this supercontinent is this.
What is Pangaea?
The theory supporting plate tectonics emerged from the study of this.
What is the ocean floor?
Tectonic plates sometimes slip or grind past each other along these.
What is a fault line?
Earth's inner core is thought to be this.
What is solid?
This sphere consists of water in oceans, lakes, and rivers, and even under the ground.
The German explorer and scientist who came up with the supercontinent idea was this.
Using this, scientists began to map the floor of the Atlantic Ocean and found that the ocean floor was not flat.
What is sonar?
This happens when tectonic plates collide.
What is an earthquake?
Earth's outer core is thought to be this.
What is liquid?
This sphere is the world of plants, animals, and other living things that occupy the land and waters of the planet.
What is the biosphere?
Evidence shows that these from South America, Africa, India, and Australia were almost identical suggesting that there was indeed a supercontinent.
What are fossils?
The ocean floor closely resembled continental these, including mountains, deep canyons, and wide plains.
What is landforms?
This is the most well known area where plates slip past each other and sometimes collide.
What is the San Andreas Fault?
The rocky surface layer is called this and is surprisingly thin.
What is crust?
Photographs of the earth taken from space show clearly that it is truly this type of planet.
What is a "watery planet"?
This Greek word means personifying the earth.
What is gaia?
Rocks found on the ocean floor are this in comparison with other rocks.
What is younger?
This is a circle of volcanoes surrounding the Pacific Ocean.
What is the Ring of Fire?
Scientists speculate that the mantle is this many miles thick.
What is 1,800 miles?
Landforms are commonly classified according to differences in this.
What is relief?
The Greek word pan means this.
What is all?
Rocks found near land are said to be this when compared with other rocks.
what is older?
Most volcanic eruptions occur here.
What are plate boundaries?