Lithosphere Part 1

The inner core is solid due to _.  

• the rapidly flowing outer core 
• the fact it is composed of iron and nickel
•  the great pressure from the rest of Earth above it 
• the fact it is spinning so rapidly

What is the process that is thought to move the tectonic plates?

• Earth's rotation

• Tidal forces from the Sun and Moon

• Convection currents

• Magnetic anomalies

This process occurs when a denser oceanic plate sinks beneath a less dense plate.

• rifting or seafloor spreading
• subduction
• shearing
• uplift

Tags

NGSS.MS-ESS2-3

In what layer are the convection currents, shown in the diagram, occurring?

• oceanic crust
• Moho discontinuity
• asthenosphere
• outer core

Most earthquakes and volcanoes occur _.

• at plate boundaries
• randomly over Earth's surface
• in the middle of tectonic plates
• along transform boundaries

Tags

NGSS.MS-ESS3-2

An ocean trench occurs when...

• plates divide and magma rises up
• oceanic crust subducts below continental crust
• we dig a hole in the ocean
• when plates slide past each other

Which type of rock results from melting and cooling of magma?

• Igneous
• Metamorphic
• Sedimentary
• Extrusive

This layer of Earth is the thickest part

• crust
• outer core
• mantle
• inner core

Earthquakes occur at

• divergent tectonic plate boundaries
• convergent tectonic plate boundaries
• transform tectonic plate boundaries
• all of these

What do geologists call the Earth’s crust and upper mantle?

• mesosphere
• lithosphere
• asthenosphere
• atmosphere