Earth Science sem 1 wk 3

Front

What is elastic deformation in rocks?

Back

Elastic deformation is the temporary change in shape or size of a rock when stress is applied, which returns to its original shape once the stress is removed.

Front

What are the driving forces of tectonic plates?

Back

The driving forces of tectonic plates are primarily related to convection currents in the Earth's mantle.

Front

What geological feature is produced by continental-continental plate collisions?

Back

Continental-continental plate collisions produce very tall mountain ranges.

Front

What is the significance of the magnetic pattern of ocean-floor rocks?

Back

The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is a mirror image of that on the other side, indicating seafloor spreading.

Front

What type of force causes faults to form?

Back

Compression, tension, and shear forces can all cause faults to form, depending on the type of stress applied.

Front

Define plastic deformation in rocks.

Back

Plastic deformation is the permanent change in shape or size of a rock when stress is applied, which does not return to its original shape after the stress is removed.

Front

What is the role of convection currents in the mantle?

Back

Convection currents in the mantle drive the movement of tectonic plates, causing geological activity such as earthquakes and volcanic eruptions.

Front

What are rift valleys?

Back

Rift valleys are low-lying areas that form when tectonic plates move apart, often leading to the creation of new ocean basins.

Front

What are deep-sea trenches?

Back

Deep-sea trenches are the deepest parts of the ocean, formed by the subduction of one tectonic plate beneath another.

Front

What is the difference between the inner core and outer core of the Earth?

Back

The inner core is solid and composed mainly of iron and nickel, while the outer core is liquid and also composed of iron and nickel.