Question

match each scenario to the tectonic boundary that contributed to its formation.
magma rose to the surface, forming rift volcanoes in east africa. two tectonic plates rubbed together, causing an earthquake long ago in california.
two plates collided, giving rise to the andes in south america
convergent
transform
divergent

Explanation:

• Convergent boundaries occur when two plates collide. The Andes formed due to the collision of the Nazca Plate and the South American Plate, so "Two plates collided, giving rise to the Andes in South America" matches convergent.
• Transform boundaries involve plates sliding past each other. Earthquakes in California (like those along the San Andreas Fault) are due to the sliding of the Pacific Plate and the North American Plate, so "Two tectonic plates rubbed together, causing an earthquake long ago in California" matches transform.
• Divergent boundaries are where plates move apart and magma rises. Rift volcanoes in East Africa (like in the East African Rift) form as the African Plate is splitting, so "Magma rose to the surface, forming rift volcanoes in East Africa" matches divergent.

Answer:

convergent: Two plates collided, giving rise to the Andes in South America
transform: Two tectonic plates rubbed together, causing an earthquake long ago in California
divergent: Magma rose to the surface, forming rift volcanoes in East Africa