Section #: 22.2
Formation of the Crust and Continents
Practice Test
1.
What is the name of the Precambrian shield in North America?
SC.D.1.4.2
a.
the Northern Shield
b.
the Canadian Shield
c.
the Proterozoic Shield
d.
the Archean Shield
Hint
2.
Minerals with low densities crystallize from a magma at __________ denser minerals do.
SC.D.1.4.2
a.
always 10 degrees less than
b.
hotter temperatures than
c.
cooler temperatures than
d.
the same temperature as
Hint
3.
Why is the age of a zircon grain older than the age of the sandstone that it was found in?
SC.D.1.4.3
a.
It is much more stable than the sandstone.
b.
because of the principle of included fragments
c.
It is much less stable than the sandstone.
d.
because of the principle of superposition
Hint
4.
According to the map, which areas of North America were most affected by the formation of the Canadian Shield?
SC.D.1.4.3
a.
the Southwest
b.
the Midwest
c.
the Pacific Coast
d.
Alaska
Hint
5.
What continent existed around 1.8 billion years ago that now forms the core of modern North America?
SC.D.1.4.3
a.
Rodinia
b.
Pangaea
c.
North America
d.
Laurentia
Hint
6.
What is the name of the first supercontinent?
SC.D.1.4.3
a.
Pangaea
b.
Rodinia
c.
Laurentia
d.
Baltica
Hint
7.
What are areas called that contain cores of Archean and Proterozoic rock?
SC.D.1.4.2
a.
Precambrian shields
b.
Canadian shields
c.
continental crust
d.
Archean shields
Hint
8.
How are microcontinents fused together?
SC.D.1.4.2
a.
the erosion of mountains
b.
by seams called faults
c.
by molten rock
d.
by seams called orogens
Hint
