Outer Layer & Plates
Earth’s outer layer is made of this kind of rock.
What is hard, solid rock?
Plates move on top of a soft, solid layer of rock called the ________.
What is the mantle?
Moving apart in different directions describes this boundary type.
What is divergent?
Something you observe repeating over and over is called a ________.
What is a pattern?
A feature on a planet’s surface like a mountain or channel is a ________.
What is a landform?
Earth’s outer layer is divided into sections called these.
What are plates?
Hot liquid rock below Earth’s surface is called ________.
What is magma?
Moving toward the same place describes this boundary type.
What is convergent?
Evidence of past life, like bones or footprints in rock, is called a ________.
What is a fossil?
A long, deep indentation in the ocean floor formed when plates move together is a ________.
What is a trench?
The place where two plates meet is called a ________.
What is a plate boundary?
Hot liquid rock on Earth’s surface is called ________.
What is lava?
At a divergent boundary, rock rises from the mantle and ________ to form new rock.
What is hardens/cools and hardens?
Geologists look for patterns in ________ and ________ events to understand Earth. (Must get one)
What are landforms and geologic events?
An underwater mountain range formed when two plates move apart is a ________.
What is a mid‑ocean ridge?
Plates move so ___________ that humans don’t feel it.
What is slowly?
Why does the mantle help plates move even though it is solid?
It is soft/able to flow slowly, allowing plates to move on top
At a convergent boundary, one plate moves ________ the other and sinks into the mantle.
What is underneath?
Mesosaurus fossils found on different continents suggest what big idea about Earth’s plates?
Continents/plates moved over time
Any processes where lava, gas, and ash are pushed out onto Earth’s surface is called ________.
What is volcanic activity?
Explain why it takes a long time for plates to travel great distances.
Their rate of movement is extremely slow, so large distances take a long time
In a cross section of Earth, what would you expect to see under the plates, and why is that important for motion?
The mantle beneath the plates, which matters because plates move on top of it
Name ONE landform made at divergent boundaries and ONE landform made at convergent boundaries.
mid‑ocean ridge (divergent) and a trench/mountains (convergent)
A map shows many earthquakes lining up near the edge of a plate. What pattern is this, and what does it help explain?
A pattern of earthquakes at plate boundaries, helping explain where plates meet and move
Use the word system correctly in a sentence about plate motion.
Earth’s plates and mantle work together as a system because the plates move on top of the mantle.