Exploring Seafloor Landforms and Features

What percentage of the seafloor has been directly sampled?

• More than 50%

• Approximately 25%

• About 10%

• Less than 1%

Which technique is used to approximate the bathymetry of the seafloor using satellites?

• Seismic wave analysis

• Direct sampling

• Gravity strength measurement

• Magnetism measurement

What is the most accurate and direct way to learn about the ocean floor bathymetry?

• Using gravity measurements

• Using satellites

• Using sonar

• Using magnetism

Tags

NGSS.MS-ESS2-3

What is the term for the vertical relief present on the seafloor?

• Topography

• Bathymetry

• Geography

• Seismography

What is the continental shelf primarily made from?

• Granite

• Sediment

• Lava

• Basalt

What type of margin is characterized by the absence of active subduction?

• Active margin

• Passive margin

• Transform margin

• Convergent margin

What geological feature is found in the middle of the Atlantic Ocean?

• Continental shelf

• Mid-ocean ridge

• Subduction zone

• Abyssal plain

Tags

NGSS.MS-ESS2-3

What causes the flatness of the abyssal plains?

• Tectonic uplift

• Volcanic activity

• Sediment accumulation over millions of years

• Erosion by water currents

Tags

NGSS.MS-ESS2-2

Which ocean is surrounded by passive margins and lacks major earthquakes and volcanism?

• Pacific Ocean

• Indian Ocean

• Atlantic Ocean

• Arctic Ocean

What natural hazard is associated with the subduction zone near Indonesia?

• Droughts

• Hurricanes

• Tornadoes

• Tsunamis

Tags

NGSS.MS-ESS3-2