Earth by the Layers
Starting with the layer humans live on, name the layers of the Earth in order
Crust, mantle, outer core, inner core
What are tectonic plates?
What is the difference between magma and lava?
Lava is above the surface, magma is below
How are rocks and minerals related?
Rocks are made of 2 or more minerals
What land form is found at a convergent boundary?
Mountain
This is the only liquid layer of the Earth
The outer core
What causes tectonic plates to move?
Convection currents in Earth's mantle
Fossils are usually found in this type of rock
Sedimentary
Name 4 of the 8 ways geologists use to identify a mineral
Luster, streak plate, density, color, crystal structure, hardness, cleavage and fracture
What is a divergent boundary?
When two plates move away from each other
What are the inner and outer core made up of?
Iron and Nickel
Sink
Metamorphic
What does it mean to be inorganic?
Not alive, and never has been
What happens at a transform boundary AND what does this movement create?
Two plates slide past each other causing an earthquake
What is the definition of a compositional layer of the Earth?
What it's made of
Why is the area that borders the Pacific Ocean called the Ring of Fire?
Because many volcanoes and earthquakes occur along this border
What is the most unreliable way to identify a mineral?
Color
What type of boundary is formed when a denser plate sinks below a less dense plate?
Subduction boundary
Why is Earth's magnetic field important?
It protects us from the sun's radiation
Why did most geologists reject Alfred Wegener's idea of continental drift?
He did not know what was causing the continents to move.
What is the difference between weathering and erosion?
Weathering is when rock is broken down into smaller pieces. Erosion is when the sediments are moved from one location to another
Name a mineral that has a role in the human body
Calcium - bones, iron - blood, zinc - helps body fight off infections, heal wounds, repair cells
Where do most earthquakes and volcanoes occur?
Along fault lines/plate boundaries