Chapter 5 - Review Flashcards
1
Q
Geologists have learned about Earth’s interior using evidence from _________________.
A
rock samples and seismic waves
2
Q
Heat transfer by the movement of currents within a fluid is called:
A
convection
3
Q
Heat flos through Earth’s mantle by:
A
convection
4
Q
Which of the following provided evidence for sea-floor spreading?
climate
fossils
magnetic stripes
landforms
A
magnetic stripes
5
Q
Oceanic crust consists mostly of:
A
basalt
6
Q
The direction of sea-floor spreading is from:
A
the mid-ocean ridge toward a trench
7
Q
What are the 3 main layers of Earth?
A
the crust
the mantle
the core
8
Q
What was formed about 260 million years aog when Earth’s continents moved together?
A
supercontinent Pangaea
9
Q
What happens when an oceanic plate collides with a continental plate?
A
the oceanic plate is subducted
