Punto caliente

The video explains how rocks in the oceanic lithosphere melt to form magma, which rises and causes volcanic activity on the Earth's surface. It discusses the concept of hot spots, which remain stationary while tectonic plates move over them, leaving a trail of volcanoes. The Hawaiian Islands are an example of landforms created by this process.

What causes volcanic activity on the earth's surface?

• The cooling of magma

• The rising of magma in columns

• The movement of tectonic plates

• The sinking of oceanic lithosphere

How do hot spots affect tectonic plates?

• They cause plates to stop moving

• They create new tectonic plates

• They leave traces of volcanoes on moving plates

• They dissolve tectonic plates

What remains fixed while tectonic plates move?

• Magma

• Volcanoes

• Hot spots

• Oceanic lithosphere

Which islands were formed on a hot spot?

• Galapagos Islands

• Fiji Islands

• Hawaiian Islands

• Canary Islands

What is the primary result of tectonic plates moving over hot spots?

• Formation of mountain ranges

• Creation of ocean trenches

• Development of volcanic islands

• Expansion of oceanic lithosphere