I am
Keep your boundaries
Look at me now
Picture this
100
I am the process by which new oceanic lithosphere (seafloor) forms when magma rises to Earth’s surface at mid-ocean ridges and solidifies, as older, existing seafloor moves away from the ridge
What is...sea-floor spreading.
100
I am the boundary where two plates slip past each other moving in opposite directions
What is... transform boundary
100
I am one of the world's biggest holes in the ground. I am the pits! As an enormous stretch mark on a continent, I show where Earth's mighty plates are pulling apart
What is... Rift Valley
100
Name the plate boundary.
What is... divergent boundary
200
I am the earliest theory that the continents slowly moved across Earth’s surface and is supported by evidence that has been collected over time from scientific investigations
What is...continental drift.
200
I am the boundary where two plates move away from each other
What is... convergent boundary
200
I am... well, some say that I am like a big zit! Yeah, I do break out on Earth's surface, fill up with angry liquid, grow until I erupt, and, of course, I hang out a lot with Earth's boundaries
What are... volcanoes
200
I am the force that drives plate tectonics
What is... convection currents
300
I am the theory that suggested pieces of Earth’s lithosphere are in constant motion driven by convection currents in the mantle
What is... plate tectonics
300
I am the boundary that moves away from each other
What is... divergent boundary
300
I shake things up. I slide around, move apart, and collide with plates all the time. I make everything tremble with my mighty power -- mountains, oceans, forests, and highways. I can be dangerous and destructive, but I can't help it. Pressure builds up and I explode
What are... earthquakes
300
Name the type of boundary
What is...transform boundary
400
I am a process of one plate sinking underneath another plate due to differences in density
What is...subduction
400
I am a mid-Atlantic ridge and an example of
What is... divergent boundaries
400
I am distant, magical, cold, and inaccessible. I am a lofty fellow whose head is in the clouds. People can't help looking up to me. I snake across the land in belts and chains, like scars on continents. These lines are the stitch marks where two bits of Earth's crust have been forcibly joined together as plates collide
What are... mountain ranges
400
Name the type of boundary
What is... divergent boundary
500
I am the name of a well-established explanation of how a process or event occurs that is supported by evidence
What is... a theory
500
I am a subduction zone and an example of
What is... convergent boundary
500
I am like two people
What is... continental crust and oceanic crust
500
Name the type of boundary
What is... convergent boundary