WorksheetsU4 M2 L2 - Development of a Theory Lamb
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
The THEORY of (a) explains how new crust is created (and explains Continental Drift)
2.
A vast, underwater mountain chain is called a(n) ______.
a)
ocean ridge
b)
deep-sea trench
c)
oceanic crust
d)
ocean floor sediment
3.
Which of the following best explains the age of oceanic crust and ocean-floor features?
a)
seafloor spreading
b)
continental drift
c)
subduction
d)
crystallization
4.
The youngest rocks on the ocean floor are located _____.
a)
near continents
b)
at mid-ocean ridges
c)
far from mid-ocean ridges
d)
near Asia
5.
The molten material deep inside Earth from which igneous rocks form is called _________.
a)
magma
b)
lava
c)
neither a nor b
d)
both a and b
6.
New ocean crust is continually formed at _____.
a)
trenches
b)
mid-ocean ridges
c)
subduction zones
d)
ocean basins
7.
What new technology was used to map the seafloor beginning in the 1940s and 1950s?
a)
LASER beams
b)
Metric system
c)
SONAR
d)
GPS
100 %
