Layers
The number of Earth's layers.
What is 4?
Interlocking pieces that make up Earth's crust.
What are tectonic plates?
The process of breaking down rock into sediment.
What is weathering?
This rock is formed when sediment is compacted and cemented together.
What is sedimentary?
Evidence of organisms that lived in the past—they often form from the hard parts of organisms, such as shells or bones.
What are fossils?
A map that shows elevation changes, shape of the land, and is used to determine the slope (steepness) of the land/landform.
What is topographical?
The first, thinnest layer of earth.
What is the crust?
Type of boundary when tectonic plates rub against one another and cause earthquakes.
What is transform?
The process of carrying sediment from one place to another.
What is erosion?
This type of rock is formed when magma or lava cools and hardens—this can happen inside the earth or when a volcano erupts.
What is igneous?
Proof that something existed, but are not the remains of the organisms.
examples: footprints, eggs, nests, coprolites...
What are trace fossils?
Type of map that shows the location of landforms and bodies of water.
What is a physical?
The second and thickest layer of earth.
What is the mantle?
Type of boundary when tectonic plates push together (collide) and create mountains.
What is convergent?
The process of dropping off sediments in a new place.
What is deposition?
This rock is formed when extreme heat and pressure change an existing rock.
What is metamorphic?
By age, these fossils are located closer to the earth's surface.
What is/are youngest?
The type of map that shows climate zones of different areas and is used to track changes to the global climate.
What is a climate?
The third layer of earth, it is liquid.
What is the outer core?
Type of boundary when tectonic plates move away from each other, causing magma to rise from the mantle to the surface.
What is divergent?
A large body of slow moving ice that changes the Earth's surface.
What is a glacier?
A landform where magma erupts through the surface.
What is a volcano?
By age the fossils located/buried deeper in the earth.
What is/are oldest?
The type of map that shows boundaries of states, cities, countries, and/or major roadways.
What is a political?
The fourth layer, at the center of earth.
What is the inner core?
The Grand Canyon was formed by the process of weathering and erosion using this natural resource.
What is water?
Earth surface has changed slowly throughout history, these two processes that result in the slowest changes of Earth's surface.
What is/are weathering and erosion?