Option D Geophysical hazards: Geophysical systems
14 revision questions with answers for Option D Geophysical hazards: Geophysical systems, marked SL and HL. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
Plate boundary type where plates move apart and new oceanic crust forms?
- DivergentRight answer
- Convergent
- Conservative
- Collision
What this set covers
Plate tectonics and the landforms and movements that follow are covered here. Divergent, conservative and collision boundaries, subduction, slab pull, hotspots, shield and composite volcanoes, focus and epicentre, mass movement and the asthenosphere appear.
- Common mix-up
- Students often mix up the focus and the epicentre of an earthquake: the focus is the rupture point inside the Earth, while the epicentre is the point on the surface directly above it.
- Revision tip
- Draw a subduction zone and label the trench, sinking plate, asthenosphere and the volcano type it produces. Add arrows to show slab pull.
All 14 questions and answers
Plate boundary type where plates move apart and new oceanic crust forms?
Answer: Divergent
Boundary type where plates slide past each other, such as the San Andreas Fault?
Answer: Conservative
Boundary where two continental plates meet, folding crust into mountains such as the Himalayas?
Answer: Collision
Process where a denser oceanic plate sinks beneath another plate into the mantle?
Answer: Subduction
Plate-driving force from the weight of cold, dense lithosphere sinking at a trench?
Answer: Slab pull
Plume of hot mantle beneath a plate, forming volcanic island chains such as Hawaii?
Answer: Hotspot
Broad, gently sloping cone built from runny basaltic lava flows?
Answer: Shield volcano
Steep cone of alternating ash and viscous lava layers, typical of subduction zones?
Answer: Composite volcano
Point inside the Earth where an earthquake's rupture begins?
Answer: Focus
Point on the ground surface directly above where an earthquake's rupture begins?
Answer: Epicentre
Downslope transfer of rock and soil under gravity?
Answer: Mass movement
Mass movement where a coherent block tilts backwards as it moves down a curved surface?
Answer: Rotational slide
Weak, ductile layer of the upper mantle on which tectonic plates move?
Answer: Asthenosphere
Heat-driven circulation of mantle material, long thought to be the main driver of plate motion?
Answer: Convection currents
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.