WorksheetsTectonics vocab #1-10
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Folded mountain ranges & ocean trenches are common along a _____________ boundary where two plates are coming together.
a)
transform
b)
divergent
c)
strike-slip
d)
convergent
2.
Iceland is growing larger every day because the mid-ocean ridge, which is a __________________ boundary that is spreading apart, runs through the center of it
a)
transform
b)
divergent
c)
subduction zone
d)
convergent
3.
Harry Hess proposed this theory, called _______________________, in the 1960’s to explain the formation of underwater mountain ranges called mid-ocean ridges.
a)
Plate tectonics
b)
Continental drift
c)
Pangaea
d)
Seafloor spreading
4.
Tectonic plates move around on this very thick lower, plastic-like layer of the mantle much like a raft floats on top of water. This layer (#2) is the _______________________.
a)
core
b)
lithosphere
c)
asthenosphere
d)
crust
5.
The outermost layer of Earth’s plates (#1) that is about 100 km thick & made up of oceanic crust, continental crust, & the rigid upper mantle is called _______________________.
a)
core
b)
lithosphere
c)
asthenosphere
d)
crust
6.
The very hot, dense center of our planet (#3)- the inner part is made of solid iron & the outer part is liquid metal- is called the ____________.
a)
core
b)
lithosphere
c)
asthenosphere
d)
crust
7.
Sections of Earth’s crust & upper mantle, called ______________, float & move along like rafts on top of a plastic-like layer of Earth.
a)
core
b)
crust
c)
mantle
d)
plates
8.
According to the theory of _____________________, which combines findings from two previous theories; Earth’s crust & upper mantle are broken into sections that float along on a plastic-like layer of the mantle.
a)
Pangaea
b)
Seafloor spreading
c)
Plate tectonics
d)
Continental drift
9.
____________ means “all land” and is the name given to the supercontinent Wegener believes began splitting apart about 200 million years ago.
a)
Continental drift
b)
Pangaea
c)
Seafloor spreading
d)
Plate tectonics
10.
The edges of some continents look as if they can fit together like a puzzle. Alfred Wegener proposed a hypothesis, called __________________________, to explain that all continents were once joined as one large land mass, and slowly moved to their current positions.
a)
Continental drift
b)
Plates
c)
Seafloor spreading
d)
Plate tectonics
100 %
