Changing Earth Unit 2017, 2016, 2015, 2014, 2013

Which property of a mineral is tested by scratching it on a glass plate?

• Conductivity
• Melting Point
• Density
• Hardness

Earth’s surface has a relatively thin, solid outer shell called the

• Atmosphere
• Lithosphere
• Mantle 
• Outer Core

Which letter from the Rock Cycle Diagram refers to the following statement:
Metamorphic rock becomes liquid and crystallizes to form igneous rock.

• H
• E
• D
• G

Volcanic Eruption
In 1783, a volcano in Iceland erupted with enormous force, pouring out large amounts of lava and volcanic ash. After the eruption, a cloud of suspended ash particles shadowed western Europe for months, resulting in unusually cold weather that summer.
The diagram represents a side view of a volcanic eruption similar to the one that occurred in 1783. The arrow on the diagram represents the direction that the ash cloud spread after the volcanic eruption occurred.
Identify one factor that caused the ash cloud to spread in the direction indicated by the arrow in the diagram.

• Magnetic pull
• Force of eruption
• Earth's rotation
• Sneeze

Volcanic Eruption
In 1783, a volcano in Iceland erupted with enormous force, pouring out large amounts of lava and volcanic ash. After the eruption, a cloud of suspended ash particles shadowed western Europe for months, resulting in unusually cold weather that summer. 
The diagram represents a side view of a volcanic eruption similar to the one that occurred in 1783. The arrow on the diagram represents the direction that the ash cloud spread after the volcanic eruption occurred.
What effects might the ash cloud have on the surface of the Earth?

• Unusually cold summer
• Global Warming
• Deterioration of the Ozone layer
• Animal populations increase

The diagram below represents a cross section of four sedimentary rock layers containing fossil remains. The layers have not been overturned.
Which type of fossil is found in the most recently formed sedimentary rock layer?

• early horses
• dinosaurs
• armored fish
• trilobites

Which evidence has led scientists to conclude that there are different layers within Earth’s interior?

• analysis of earthquake wave data
• measurement of Earth's diameter
• rock samples taken from Earth's core
• temperatures taken within each layer

Which Earth layer contains convection currents that are believed to be responsible for the movement of Earth’s tectonic plates?

• crust
• mantle
• outer core
• inner core

The relatively thin layer of rock at Earth’s surface is called the

• atmosphere
• hydrosphere
• lithosphere
• hemisphere

The diagram below represents a cross section of sedimentary rock layers in Earth’s crust. Line XY represents a fault.
Which statement best describes the geologic history of this section of Earth’s crust?

• The area has remained stable since the sedimentary rocks were formed
• Sediments were deposited differently on each side of the fault
• Crustal movement occurred after the sedimentary rocks were formed
•  Lava has flowed along the fault