Multiple Choice
Name___________________ Class______________ Date________
Circle the letter of the correct choice.
1.
2.
3.
4.
5.
6.
7.
How old are the oldest continental rocks?
a.
about half a million years old
b.
a few million years old
c.
100 million years old
d.
billions of years old
Crustal deformation occurs when Earth’s crust
a.
pulls apart.
b.
pushes together.
c.
slides past other crust.
d.
all of the above
Crustal deformation may result in the formation of
a.
hills.
b.
valleys.
c.
mountains.
d.
all of the above
Deltas form when
a.
oceanic crust plunges beneath continental crust.
b.
sediments are deposited.
c.
continents collide.
d.
volcanoes erupt.
The East African rift valley is forming where crust is
a.
compressed.
b.
pulled apart.
c.
pushed together.
d.
deposited by water.
The ocean basins are all younger than
a.
180 million years old.
b.
100 million years old.
c.
80 million years old.
d.
18 million years old.
New seafloor forms when
a.
sediments are deposited.
b.
volcanic activity occurs.
c.
crust is uplifted.
d.
none of the above
Lesson 2.1: Earth's Surface
Matching
Name___________________ Class______________ Date________
Match each definition with the correct term.
Definitions
_____ 1. mountain range that runs through much of the ocean basin
_____ 2. any force that wears down landforms
_____ 3. deep valley on the ocean floor
_____ 4. any force that causes landforms to grow
_____ 5. continental crust that extends downward to the seafloor
_____ 6. large land area that lies above sea level
_____ 7. physical feature of Earth’s surface
Terms
a. constructive force
b. landform
c. continent
d. destructive force
e. mid-ocean ridge
f. ocean trench
g. continental margin