Tectonics and Geological Events

Which geological formations occur at convergent boundaries? Select ALL that apply.

• volcanoes

• rift valleys

• ocean basins

• mid-ocean ridges

• trenches

Which statements describe how volcanoes can form? Select ALL that apply.

• Magma can rise over a hotspot from the mantle.

• Ocean crust subducts under continental crust.

• Continental crust subducts under ocean crust.

• Molten rock builds up heat and pressure until an explosion occurs.

• Rock from the liquid core comes directly out of the crust.

Model: Create a model using the directions below. Create a model to show how tectonic plates are involved in ocean basin formation. Be sure to give the name of the tectonic plate boundary involved.

• Divergent boundary

• Convergent boundary

• Transform boundary

• Subduction zone

11. Which student is correct?

• A. Bassam

• B. Ezekial

• C. Both are correct.

• D. Neither student is correct.

Which best describes a volcano that forms due to subduction?

• It occurs in the middle of a tectonic plate.

• It happens at divergent plate boundaries.

• It happens when oceanic crust sinks beneath continental crust.

• It happens at transform plate boundaries.

There are three plate pairs in the image below. Which arrows correctly show the three types of tectonic plate boundaries?

• Option A: Convergent, Divergent, Transform

• Option B: Divergent, Transform, Convergent

• Option C: Transform, Convergent, Divergent

Earthquakes occur due to the movement of what geological structures?

• Volcanoes

• Rivers

• Tectonic plates

• Mountains

Which geological process involves the creation of new oceanic crust at mid-ocean ridges?

• Seafloor spreading

• Subduction

• Erosion

• Sedimentation

Your friend wants to know why some mountains are volcanic, but others aren’t. Describe the difference between mountain formation and volcano formation through tectonic plate activity.

• Mountain formation is due to tectonic plates colliding, while volcano formation is due to tectonic plates diverging.

• Mountain formation is due to tectonic plates diverging, while volcano formation is due to tectonic plates colliding.

• Mountain formation is due to tectonic plates sliding past each other, while volcano formation is due to tectonic plates colliding.

• Mountain formation is due to tectonic plates colliding, while volcano formation is due to tectonic plates sliding past each other.

Evidence suggests the Earth is approximately how old? (a)  

• 4.6 billion years old

• 4.6 million years old

• 100 billion years old

• 20,000 years old