Earth Science Unit Review

1.) Which part of the Earth is broken into several large tectonic plates?

• Lithosphere

• Outer Core

• Mantle

• Asthenosphere

2.) Which geologic event is most likely to occur at a transform boundary?

• Mountain formation

• Rift formation

• Earthquake

• Volcanic eruption

3.) What type of convergent boundary would result in mountain formations?

• two oceanic plates spreading apart

• two continental plates colliding

• two continental plates spreading apart

• two oceanic plates colliding

4.) What would happen if oceanic crust collided with less dense continental crust?

• The two portions of crust will stop moving

• The continental crust will subduct beneath the oceanic crust 

• The two portions of crust will slide past each other

• The oceanic crust will subduct beneath the continental crust

5.) What two (2) types of crust make up tectonic plates?

• Oceanic crust and continental crust

• Slabs of lithosphere and asthenosphere

• Slabs of the mantle

• Magma and lava

6.) What evidence did Wegener use to support his theory of Continental Drift?

• Seafloor spreading

• Similar rocks and similar fossils on different continents

• Fossils from ancient organisms and convection currents in the asthenosphere

• Convection currents in the asthenosphere and seafloor spreading

7.) Which of the following is NOT a result of a divergent boundary?

• Seafloor spreading

• Subduction zones

• Mid ocean ridges

• New ocean crust

8.) What best describes the cause for movement of the tectonic plates?

• Rotation of liquid rock within the core

• Gravitational pull between Earth and the moon

• Convection currents beneath the Earth’s crust

• Energy produced by earthquake within the Earth

9.) What is the best evidence that Alaska is in an area with tectonic activity?

• Presence of lakes and rivers

• Amount of unfrozen soil

• Evidence of icebergs from glaciers

• Frequency of strong earthquakes

10.) The strength of an earthquake depends on which factor(s)?

• The population and size of the city

• The amount of stress built up and distance from epicenter/focus

• The distance from a major city and the time of the day it occurs