Structure of the Earth
What is the thinnest layer of the Earth
Crust
What are tectonic plates?
Giant pieces of Earth's crust.
True or False, tectonic plates move on average at the same speed as how fast your fingernails grow
True
What is in the Mantle
A mix of solid and melted rock
What are some of the effects of tectonic plate movement?
Earthquakes, volcanoes, mountains,
True or false, natural hazards are always natural disasters
false
What is the order of the layers of the Earth - Starting from the outside
Crust, Mantle, Outer core, Inner core
What are the 3 different plate boundaries called?
Conservative, Destructive, Constructive
What is a secondary effect of an earthquake
Tsunami
What are the metals present in the earths cores
Iron and nickel
How do they help us?
Understand Earth's history, past events, and where things were located long ago.
What happened in Tibet last week?
A 7.1 magnitude earthquake
What do the metals in the cores make around the earth?
Magnetic field
Describe Constructive plate boundaries
Plates move apart, magma rises, and new crust forms. Creates mid-ocean ridges and rift valleys. Volcanoes and earthquakes are common, but generally less intense.
Describe a destructive plate boundary
Plates collide, one slides under (subduction), melts, volcanoes erupt, earthquakes happen, trenches and mountains form.