M1L2 Development of a Theory

As new seafloor moves away from an ocean ridge, the seafloor cools and becomes less dense than the material beneath it.

• True

• False

The youngest rocks on the ocean floor are located ____

• near continents

• at mid ocean ridges

• far from mid-ocean ridges

• near Asia

Tags

NGSS.MS-ESS1-4

What TWO words are the best used to describe how the seafloor spreads

• Magma and conveyor belt

• Earthquakes and the conveyor belt

• Volcanoes and earthquake

• Volcanoes and the conveyor belt

What is the rate at which tectonic plates are moving?

• Between 1-9mm per year

• Between 1-9cm per year

• Between 1-9km per year

• Between 1-9inches per year

Tags

NGSS.MS-ESS2-3

Which of the following best explains the age of oceanic crust and ocean-floor features?

• continental drift

• crystallization

• seafloor spreading

• convection

______ is the study of the forms and features of land surfaces.

• Tomography

• Topography

• Geology

• None of the above

An ____ is an imaginary line on a map that shows points that have the same age

• isochron

• isochrome

• isomer

• isotope

Tags

NGSS.MS-ESS1-4

The theory of _____________. explains how new crust is created at mid-ocean ridges.

• continental drift

• plate tectonics

• ocean trenches

• seafloor spreading

The theory of_____ states that Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other.

• Plate tectonics

• continental drift

• ocean trenches

• seafloor spreading

Tags

NGSS.MS-ESS2-3

True or False The plates never stop moving

• True

• False

Tags

NGSS.MS-ESS2-3