Download Plate Tectonics - Chapter Review Part 1

Name _______________________ Class ____________ Date ____________
Plate Tectonics - Chapter Review Part 1
1. When continental plates pull apart at a divergent boundary on land, a(n) ____________________ forms.
2. The part of the mantle called the ____________________ is made of soft rock that bends like plastic.
3. In the mantle, heat is transferred as soft rock flows slowly in cycles known as _______________________.
4. The hypothesis of _________________________ was that all the continents once were joined as a single
supercontinent and have since drifted apart.
5. To support his hypothesis, Alfred Wegener provided evidence from ____________________, traces of
ancient organisms preserved in rock.
6. The process of _________________________ continually adds new crust to the ocean floor along both
sides of the mid-ocean ridge.
7. Two of Earth’s plates slip past each other, moving in opposite directions, along a(n)
____________________ boundary.
8. The lithosphere is broken into sections called _______________, which float on top of the asthenosphere.
9. The formation of volcanoes and mountain ranges can be explained by the theory of __________________.
10. A continental plate collides with an oceanic plate at a(n) ____________________ boundary.
11. The ocean floor sinks beneath a deep-ocean trench and back into the mantle in a process known as
____________________.
12. Wegener believed that the continents had once been joined in one landmass called __________________.
13. Scientists think that the ____________________, made of liquid iron and nickel, moves to produce Earth’s
magnetic field.
Name _______________________ Class ____________ Date ____________
Plate Tectonics - Chapter Review Part 2
1. A(n) ____________________ is any material that attracts iron and materials that contain iron.
2. The attraction or repulsion between magnetic poles is called ____________________.
3. Magnetic ____________________ spread out from one pole, curve around the magnet, and return to the
other pole.
4. When placed near each other, unlike magnetic poles ____________________ each other.
5. A(n) ____________________ is the region of magnetic force around a magnet.
6. Earth’s magnetism is related to the circulation of molten material within Earth’s ____________________.
7. A magnet made from a material that easily loses its magnetism is called a(n) ____________________.
8. A(n) ____________________ is made from a material that keeps its magnetism for a long time.