Destructive (convergent) plate margins

Question 1

Formed

Answer 1

Two plates collide

Question 2

Types

Answer 2

• Oceanic and continental
• Oceanic and oceanic
• Continental and continental

Question 3

Oceanic and continental

Answer 3

Landforms;

• Ocean trench
• Fold mountains

Hazards

• Earthquakes - intermediate and deep focus
• Volcanoes - explosive

1. Continental plate less dense
2. Oceanic is denser = subducts underneath
3. Benioff Zone = point where friction and heat occurs between two plates
   - Oceanic melts
   - 100-700km deep

Question 4

Oceanic and oceanic

Answer 4

Landforms;

• Ocean trenches
• Island arcs

Hazards;

• Earthquakes
• Volcanoes - explosive, acid

1. Faster moving/ more dense plate subducts underneath
2. Oceanic melts in Benioff = earthquake
3. Rising magma = submarine volcano along plate margin = grow + create island arcs

Question 5

Continental and continental

Answer 5

Landforms;

• Nappe
• Fold mountains

Hazards;
- Earthquakes - intermediate and deep focus

1. 2 continental plates converge = lower density than asthenosphere
2. Colliding plates + sediment between = uplifted and buckle = fold mountains
3. No volcanic activity = no subduction