Earth's Dynamic Crust

The image shows the Mid Atlantic Ridge. Which type of boundary occurs at this ridge where the ocean floor is spreading apart? 

• convergent
• divergent 
• transform fault

The innermost layer of the Earth is thought to be made of solid iron. What is the name of this layer?

• mantle
• asthenosphere
• inner core
• outer core

What causes tectonic plates to move?

• ocean currents
• convection currents in the mantle
• volcanoes
• the Coriolis Effect

The tectonic plates rest on this layer and it is responsible for the movement of those plates. What is the name of this layer?

• crust

• asthenosphere

• outer core

• inner core

What instrument is used to detect the magnitude of earthquakes?

• barometer
• electrograph
• seismograph
• pictograph

The movement of Earth's crust along plate boundaries produces

• earthquakes
• volcanoes
• moutains
• All of these options. 

What is the main cause of most earthquakes?

• human activity

• hurricanes

• changes in temperature in Earth's mantle

• pressure deep within the Earth that is being released

If the focus of an earthquake occurs beneath the sea floor, as the seismic waves travel through the ocean, they create a massive and destructive

• epicenter
• tsunami
• focus
• mountain

In the image, which type of boundary is shown? Hint: its located in the state of California. 

• divergent
• convergent
• transform fault

Look at the image. The South American and Nasca plate are moving together. Which type of boundary is this? 

• divergent
• convergent
• transform fault