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