Unit 4 Lesson 3 Part II

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases) caused by differences in temperature and density.

Front

What causes convection currents in a fluid?

Back

Convection currents are caused by the uneven heating of a fluid, leading to differences in density.

Front

Where does the heat that drives convection currents in the Earth's mantle come from?

Back

The heat comes from the Earth's core.

Front

What is the role of the Mid-Ocean Ridge in plate tectonics?

Back

The Mid-Ocean Ridge is where new oceanic crust is formed, contributing to the movement of tectonic plates.

Front

What is the relationship between convection currents and lithospheric plate movement?

Back

Convection currents in the mantle cause the lithospheric plates to move.

Front

What is the significance of density differences in convection?

Back

Density differences in a fluid cause warmer, less dense fluid to rise and cooler, denser fluid to sink, creating a convection current.

Front

What geological features are associated with active volcanoes?

Back

Active volcanoes are associated with the formation of the newest crust.

Front

How does uneven heating affect the Earth's layers?

Back

Uneven heating causes convection currents within the Earth's layers, leading to geological activity.

Front

What is the primary driver of tectonic plate movement?

Back

The primary driver of tectonic plate movement is convection currents in the mantle.

Front

What happens at subduction zones?

Back

At subduction zones, one tectonic plate is forced under another, leading to geological activity such as earthquakes and volcanic eruptions.