Unit 6 Sea Floor

Cool, rigid, outermost layer of Earth that is divided into enormous pieces called tectonic plates; consists of the crust and the rigid uppermost part of the mantle.

• Continental drift theory
• Contour intervals
• Topography
• Lithosphere

Tags

NGSS.MS-ESS2-3

The boundary between two plates that slide past one another -- sudden shifts that result in major geological events such as earthquakes and the release of stored energy.

• Subduction
• Ocean Trench
• Convergent Boundary with Mountain Building
• Transform boundary

Tags

NGSS.MS-ESS3-2

Deep and narrow depressions in the seafloor where the subducted plate moves into the asthenosphere.

• Subduction
• Ocean Trench
• Convergent Boundary with Mountain Building
• Transform boundary

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

The process in which a denser plate is pushed downward beneath a less dense plate when plates converge; occurs at continental to oceanic boundaries and oceanic to oceanic boundaries.

• Subduction
• Ocean Trench
• Convergent Boundary with Mountain Building
• Transform boundary

Tags

NGSS.MS-ESS2-3

Occurs when two tectonic plates move away from each other.

• Convection currents
• Fossils
• Sea Floor Spreading evidence
• Divergent boundary

Tags

NGSS.MS-ESS2-3

Bathymetry is______

• The study of submarine volcanoes

• The study of plate tectonics

• The study of ocean contours

• The study of sea water

What percentage of the oceans have been mapped to the same precision as the moon?

• 75%

• 5%

• 25%

• 50%

One fathom is equal to

• 3 ft.

• 2 m.

• 6 m.

• 6 ft.

The submerged outer edge of a continent is called the

• deep-ocean basin

• subduction zone

• continental margin

• mid-ocean ridge

Tags

NGSS.HS-ESS1-5

The bulk of the ocean floor is composed of______

• continental margin

• hydrothermal vents

• mid-ocean ridges

• deep-ocean basins