T2T2 Reteach

Unleashing Earth's Dynamic Forces

Explore the immense power and impact of Earth's dynamic forces, from earthquakes and volcanoes to plate tectonics and mountain formation. Discover the fascinating processes that shape our planet and influence its landscapes.

Convergent Boundaries

• Definition: Convergent boundaries occur when two tectonic plates collide.
• Result: This collision can lead to the formation of mountains, volcanic activity, and earthquakes.
• Types: There are three types of convergent boundaries: oceanic-oceanic, oceanic-continental, and continental-continental.
• Examples: The Andes Mountains, the Himalayas, and the Ring of Fire are all examples of convergent boundaries.

Multiple Choice

What are the three types of plboundaries?

• Oceanic-oceanic, oceanic-continental, and continental-continental

• Divergent, transform, and convergent

• Subduction, collision, and spreading

• Trench, ridge, and fault

Types of Convergent Boundaries

Trivia: Did you know that there are three types of plate boundaries? They are divergent, transform, and convergent. Divergent boundaries occur when two plates move apart, transform boundaries occur when two plates slide past each other, and convergent boundaries occur when two plates collide.

Earth's Dynamic Forces

• Divergent Boundary: A boundary where two tectonic plates move away from each other, creating new crust. This process leads to the formation of rift valleys, mid-ocean ridges, and volcanic activity.
• Key Features: Rift valleys, mid-ocean ridges, volcanic activity
• Examples: East African Rift, Mid-Atlantic Ridge

Multiple Choice

What type of boundary is characterized by two tectonic plates moving away from each other?

• Convergent Boundary

• Transform Boundary

• Divergent Boundary

• Subduction Zone

Divergent Boundaries

Divergent boundaries occur when two tectonic plates move away from each other. This movement creates a gap where new crust is formed from molten material rising to the surface. Famous examples include the Mid-Atlantic Ridge and the East African Rift Valley. Volcanoes, earthquakes, and the creation of new oceanic crust are some of the fascinating phenomena associated with divergent boundaries.

Convection Currents:

• Definition: The movement of heat within a fluid due to differences in temperature and density.

• Driving Force: Heat transfer through convection causes fluid to rise or sink, creating circular motion.

• Importance: Convection currents drive plate tectonics

Multiple Choice

What causes fluid to rise or sink and create circular motion?

• Conduction

• Radiation

• Convection

• Evaporation

Fluid Motion

Trivia: Fluid motion is caused by convection, where the fluid rises or sinks due to temperature differences. This creates circular motion, like in a boiling pot of water. Other options like conduction, radiation, and evaporation do not directly cause fluid motion.

Plate Movements

• Tectonic plates are large pieces of Earth's crust that move and interact with each other.
• There are three types of plate boundaries: convergent, divergent, and transform.
• Convergent boundaries occur when plates collide, creating mountains and volcanoes.
• Divergent boundaries happen when plates move apart, forming rift valleys and mid-ocean ridges.
• Transform boundaries occur when plates slide past each other, causing earthquakes.

Multiple Choice

What are the three types of plate boundaries movements?

• Convergent, divergent, and transfer

• Colliding, moving apart, and sliding past

• Mountains, rift valleys, and earthquakes

• Tectonic plates, Earth's crust, and volcanoes

Plate Boundaries

Trivia: Plate boundaries are where tectonic plates interact. They can collide, move apart, or slide past each other. These interactions create mountains, rift valleys, and earthquakes. The three types of plate boundaries are convergent, divergent, and transform. Did you know? The movement of tectonic plates is responsible for shaping the Earth's surface over millions of years.

Multiple Choice

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• strike slip

Multiple Choice

Which correctly identifies the geologic process that formed the Himalayan mountains (The World's Tallest Mountains, including Mt. Everest)?

• Two continental plates converging

• An earthquake in a subduction zone

• A tectonic plate moving over a hot plate

• Movement at a transform fault boundary

Multiple Choice

Volcanoes and Earthquakes typically occur _______________.

• along plate boundaries

• only under water

• only in hawaii

• where it is usually hot

Multiple Choice

What type of boundary is this?

• Divergent

• Convergent

• Transform

Multiple Choice

What evidence did Wegener use in his Continental Drift theory?

• Continents and fossils fitting together/matching-up like puzzle pieces

• Plant and animal fossils

• mountain ranges and coal deposits line up across continents

• all of the above

Multiple Choice

What type of Boundary is this? What event will occur at this boundary?

• Transform / Earthquakes

• Subduction / Volcano Eruption

• Tornado / Rain

• Mountain Building / Volcanism