Plate Tectonics

Front

Geologists obtain indirect evidence about Earth’s interior by _______

Back

recording and studying seismic waves.

Front

What is the correct order (starting from the surface) of Earth’s layers? Options: crust, outer core, inner core, mantle, mantle, outer core, inner core, crust, outer core, inner core, crust, mantle, crust, mantle, outer core, inner core

Back

crust, mantle, outer core, inner core

Front

Earth’s inner core is _______

Back

a dense ball of solid metal.

Front

Heat transfer within a fluid takes place by _______

Back

convection currents.

Front

According to Wegener’s hypothesis of continental drift, _______

Back

the continents were once joined together in a single landmass.

Front

What is Pangaea?

Back

the name of the supercontinent that existed millions of years ago

Front

Which type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis? Options: evidence from landforms, evidence from human remains, evidence from climate, evidence from plant and animal fossils

Back

evidence from human remains

Front

Most geologists rejected Alfred Wegener’s idea of continental drift because _______

Back

Wegener could not identify a force that could move the continents.

Front

How did scientists discover that rocks farther away from the mid-ocean ridge were older than those near it?

Back

by determining the age of rock samples obtained by drilling on the sea floor

Front

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

Back

subduction