Y10GT2 Tectonics

What are tectonic plates?

• Large slabs of Earth's lithosphere that move over the mantle
• Small pieces of rock found in the ocean
• Layers of soil that make up Earth's crust
• Solid pieces of Earth's core

Which type of plate boundary is responsible for earthquakes and volcanic activity?

• Destructive plate boundary
• Conservative plate boundary
• Constructive plate boundary
• Passive plate boundary

What is the name of the supercontinent that existed around 300 million years ago?

• Pangaea
• Gondwana
• Eurasia
• Laurasia

Which of the following is an example of a destructive plate boundary?

• The boundary between the Nazca Plate and the South American Plate
• The boundary between the Eurasian Plate and the North American Plate
• The boundary between the Pacific Plate and the Australian Plate
• The boundary between the African Plate and the Arabian Plate

What process drives the movement of tectonic plates?

• Convection currents in the mantle
• Wind and ocean currents
• The rotation of the Earth
• Gravity from the Moon

What happens at a conservative plate boundary?

• Plates slide past each other, causing friction and earthquakes
• One plate is forced under another, forming volcanoes
• Plates move apart, allowing magma to rise and form new crust
• Plates collide and create fold mountains

Which type of plate boundary is associated with the formation of mid-ocean ridges?

• Constructive (divergent) plate boundary
• Destructive (convergent) plate boundary
• Conservative (transform) plate boundary
• Collision plate boundary

Why do oceanic plates subduct beneath continental plates at destructive plate boundaries?

• Oceanic plates are denser than continental plates
• Oceanic plates are thicker than continental plates
• Continental plates move faster than oceanic plates
• Continental plates are made of heavier rock than oceanic plates

Which of the following best explains why Iceland has frequent volcanic activity?

• It is located on the Mid-Atlantic Ridge where two plates are moving apart
• It is near a major subduction zone where one plate sinks under another
• It is situated on a conservative boundary where plates slide past each other
• It is affected by hot spot activity away from plate boundaries

Which process is responsible for the creation of island arcs, such as the Mariana Islands?

• Subduction of one oceanic plate beneath another at a destructive boundary
• The movement of a continental plate over a hot spot
• The collision of two continental plates, forming mountain ranges
• Seafloor spreading at a mid-ocean ridge