Volcanoes Flashcards
What is a magma chamber
A magma chamber is a space in the earth where magma is held under a volcano
What is a vent
Magma goes through here from the magma chamber before an eruption
What is the ring of fire
The ring of fire is a ring of volcanoes in the Pacific Ocean
Name a shape of a volcano
A cone shaped volcano, a shield shaped volcano and a fissure
How do volcanoes happen
Volcanoes happen when magma comes up through a vent through the crust onto the earths surface
Name a type of eruption
A lateral eruption, an oceanic eruption and a vertical eruption
What is a convection current
A convection current is heat driven cycles that occur in the mantle and make plates move by slowly dragging them
What is a convection current
A convection current is heat driven cycles that occur in the mantle and make plates move by slowly dragging them
What happens when plates separate
When plates separate magma comes through to the surface to fill the gap and it hardens and turns into new oceanic crust
What type of eruption was mount edna?
Mount Edna what’s a lateral eruption
What is the most common landform in the pacific ring of fire
Volcanoes are the most common landform in the pacific ring of fire
Name 2 positive effects of volcanic activity
Tourism, money are 2 positive effects
Name two negative effects of volcanic activity
Loss of life and destruction
What is the top of a volcano called
The top of a volcano is called a crater
What do constructive plate boundaries cause
Volcanoes and oceanic ridges e.g Mid Atlantic Ridge
