WorksheetsChapter 17 Earth Science Tectonics Putman
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
The pattern of alternating and reversed polarity in rock to create the geomagnetic __________.
a)
time scale
b)
sea floor spreading
c)
reversal time scale
d)
normal time scale
2.
A rift is the crack in the ocean floor through which _______________ rises.
a)
rock
b)
magma
c)
water
d)
steam
3.
Sediment that is closer to a mid-ocean ridge is younger than the sediment that is _______ _________.
a)
Close together
b)
Enormous
c)
farther away
d)
ancient sand
4.
Magnetic patterns on the ocean floor were puzzling because they showed alternating bands of normal and reversed ______________.
a)
charge
b)
geomagnetism
c)
polar charge
d)
polarity
5.
Wegener’s hypothesis of __________ ________ was finally confirmed by evidence supporting the idea of sea-floor spreading.
a)
continental drift
b)
sea spreading
c)
polar charge
d)
beach building
6.
Tectonic plates can include both _________ and __________ crust.
a)
hard, soft
b)
Continental, mountainous
c)
oceanic, continental
d)
American, european
7.
The Pacific Ring of Fire is a zone of active _____________.
a)
bonfires
b)
volcanoes
c)
lightening
d)
thunder
8.
The Himalaya Mountains were formed in a collision at a ______________ boundary.
a)
transforn
b)
fracture
c)
Divergent
d)
convergent
9.
An example of a ______________ boundary is the San Andreas Fault in California.
a)
convergent
b)
divergent
c)
fracture
d)
transform
10.
The force exerted by the leading edge of a subducting plate is __________ ________.
a)
slab pull
b)
ridge push
ridge push
ridge push
c)
convection zone
d)
tectonic plate
11.
_____ _____ ________often forms when large terranes and continents collide.
a)
small volcanic islands
b)
mounain side cratons
c)
major mountain chains
d)
small coral islands
12.
Modern climates are a result of past movements of _____________ _____________.
a)
tectonic plates
b)
organism migration
c)
Earth's convection
d)
rain and snow
13.
North America and Eurasia were formed when a rift separated the continent of .
a)
eurasia
b)
pangaea
c)
cratons
d)
Laurasia
14.
The theory that explains why and how continents move is called _________ ___________.
a)
ice age
b)
plate tectonics
c)
land migration
d)
land immigration
15.
Frequent earthquakes in an area may indicate tectonic plate ___________.
a)
divergence
b)
convergence
c)
accretion
d)
boundaries
16.
Convection, ridge push, and slab pull work together to produce
a)
constant tectonic plate motion
b)
continental lithosphere
c)
rifting
d)
earthquakes
17.
Convection, ridge push, and slab pull work together to produce
a)
constant tectonic plate motion
b)
continental lithosphere
c)
rifting
d)
earthquakes
18.
A terrane becomes part of a continent in a process called _______________.
a)
rifting
b)
accretion
c)
slab pull
d)
converging
19.
One way tectonic plate movement affects climate is it creates mountains that affect
a)
wind patterns
b)
ice caps
c)
snow fields
d)
yeti
20.
The splitting of Pangaea into two continents is part of the
a)
Eurasia competition
b)
parting cycle
c)
domain theory
d)
supercontinent cycle
21.
The most conclusive proof for continental drift was provided by evidence of
a)
landslide
b)
sea-floor spreading.
c)
glacier migration
d)
geomagnetic land stips
22.
To assign ages to sea-floor rocks, scientists used the
a)
calender
b)
stop watch
c)
geomagnetic reversal time scale
d)
tectonic plate map
23.
Tectonic plates are blocks of ______________.
a)
continents
b)
seafloor
c)
mountains
d)
lithosphere
24.
At the center of a mid-ocean ridge is a
a)
deep ocean trench
b)
rift valley
c)
asthenosphere
d)
magma
25.
Deep-ocean trenches form at
a)
convergent boundaries.
b)
divergent boundries
c)
island arcs
d)
fracture zones
26.
Built-up heat from the mantle that weakens lithosphere causes
a)
cratons
b)
accretions
c)
atolls
d)
rifting.
27.
A seamount colliding with a continent and forming a mountain chain on the continent is an example of
a)
accretion
b)
slab pull
c)
ridge push
d)
rifting
100 %
