Earth's Spheres
The sphere of Earth that all living things belong to
What is the biosphere?
This layer of Earth is the widest/largest.
What is the mantle?
Harry Hess used mid-ocean ridges, magnetic rocks, and sediment accumulation as evidence for this natural process.
What is seafloor spreading?
Scientists use these devices to measure seismic activity in the Earth.
What is a seismometer?
This US state was formed due to volcanic activity at a hotspot in the middle of the Pacific Ocean
What is Hawaii?
The sphere of Earth that includes the solid part of Earth, or what goes on beneath your feet
What is the geosphere?
This layer helps create the Earth's magnetic field.
What is the outer core?
The name of the supercontinent that existed about 300 to 200 million years ago, proposed by Wegener.
What was Pangaea?
The type of seismic wave that sets off the alert systems at earthquake monitoring stations
What is a primary wave?
Molten rock flowing below the surface of Earth is called ___________.
What is magma?
Which spheres are interacting if a river is eroding its banks, washing dirt and gravel downstream?
What are the hydrosphere and the geosphere?
The layer(s) that make up Earth's asthenosphere.
What is the mantle?
This type of plate boundary produces visible fault lines and earthquakes.
What is a transform boundary?
Type of seismic wave that causes the most damage
What is a surface wave?
Volcanoes form at these two kinds of tectonic plate boundaries
What are convergent (subduction) and divergent boundaries?
Which spheres are interacting if photosynthesis is taking place?
What are the Biosphere (plants), the Atmosphere (carbon dioxide), and the Hydrosphere (water)?
This property of matter helps separate the layers of Earth based on what materials are heavier or lighter.
What is density?
This type of plate boundary creates very tall mountains or deep trenches in the ocean near coastlines.
What is a convergent boundary?
90% of all the earthquakes on the Earth happen in this part of the planet
What is the Ring of Fire?
This is the hole left behind when a volcano erupts and collapses its main magma chamber and vent.
What is a caldera?
Which of Earth's spheres are impacted when you participate in recycling?
What are all of the spheres?
(Recycling is important to keep all four of our spheres healthy.)
______ and ______ increases as you travel further inside the Earth.
What are heat and pressure?
This type of plate boundary creates rift valleys and mid-ocean ridges.
What is a divergent boundary?
The direction that seismic waves travel away from where an earthquake begins
What is ALL directions?
(Think 360 degrees or in 3D)
This type of volcano is formed around a single vent when volcanic ash, cinders, and bombs erupt and then fall, creating a hill around the top crater
What is a cinder cone volcano?