Observation vs. Inference
What does it mean to observe something?
To use your senses to gather information about something
Which layer of earth do we live on?
Crust
What is the boundary called where two plates slide past one another?
Transform fault
What does the Richter Scale measure?
the strength/magnitude of earthquakes
What does it mean in infer something?
To infer is to use your background knowledge to explain your observations
What layer is just below the crust?
Mantle
What is a boundary called where two plates push toward one another?
Convergent
Two plates can collide, crumpling and causing mountains to form OR one can go under the other and melt back into the mantle.
What numbers do we use to measure the magnitude of earthquakes on the Richter scale?
1-10
Your dog comes in from outside and you observe that its fur is wet. What inferences could you make from your observation?
It is raining outside.
The dog jumped in the pool.
Any explanation of why the dog is wet.
Which layer is the hottest?
Inner core
What is a boundary called where two plates move apart from one another?
Divergent
When two plates move apart, magma rises up from the mantle to the surface, forming new rock or mountains.
You walk into your backyard and you observe feathers all over the ground. What inferences could you make from your observation?
A bird molted in your backyard.
A hawk caught a bird.
Two birds got in a fight.
Any answer that explains why there are feathers on the ground.
Which layer is made of liquid rock (magma)?
Outer core
What kind of fault/plate boundary runs through California?
A transform fault (the slates slide past one another)
At what magnitude can we start to feel earthquakes?
2-3
Make at least two inferences from this photo.
The man broke his leg skiing.
It is cold outside.
It is wintertime.
Which layer is made of solid iron and nickel?
Inner core
What is the name of the fault/plate boundary in California?
San Andreas Fault
What is the instrument called that measures the magnitude of earthquakes?
Seisomograph
Modern computers that measure earthquakes are called seismometers.