radiation from within the crust

slow continental drift

convection currents in the mantle

magnetic forces from the inner core

deep-sea trench

oceanic crust

ocean ridge

ocean floor sediment

granite and marble

iron and copper

nickel and iron

nickel and granite

convergent

divergent

transform fault

all of the above

granite

basalt

quartz

limestone

two plates move away from each other

two plates move towards each other

two plates split past each other

one plate moves in, the other moves out

True. Earthquakes can happen anywhere across the globe because the plates are moving.

True. Earthquakes are random events because earth is a geologically active planet.

False. Earthquake epicenters are found exclusively along the periphery of the Pacific Ocean Basin.

False. Earthquake epicenters are much more common at the ocean ridges and beside trenches, just as volcanoes are.

Bigger. New ocean floor is continuously being formed at the Mid-Atlantic Ridge, which means that the Atlantic Ocean is expanding.

Bigger. Iceland is located at the boundary between the North American plate, which moves to the west and approximately 2 cm every year, about 1 cm to the right and 1cm to the left.

Smaller. Because subduction continuously takes place and some plates keep colliding. These form new volcanoes and mountains in the Andes and the Himalayas.

Neither. When new crust is created at the Mid-Atlantic Ridge, which is divergent plate boundary, the same amount of crust is absorbed into the earth during subduction at convergent plate boundaries like the Nazca Plate.

crust

mantle

inner core

outer core