Chapter 7 Vocabulary

hypothesis that continents are in constant motion

• continental drift

• Pangaea

• seafloor spreading

• plate tectonics

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

naturally preserved remains, imprints, or traces of organisms

• Pangaea

• Glossopteris

• fossil

• subduction

Tags

NGSS.MS-LS4-1

middle layer of Earth situated between the crust above and the core below

• crust

• lithosphere

• athenosphere

• mantle

ancient supercontinent, composed of land that forms today's continents

• Glossopteris

• Pangaea

• Laurasia

• Gondwanaland

event in which magnetic field reverses direction

• magnetic reversal

• magnetism

• normal polarity

• reversed polarity

mountain range located on the seafloor in the middle of the ocean

• Himalayas

• Andes

• mid-ocean ridge

• Mid-Atlantic ridge

Tags

NGSS.MS-ESS2-3

conforming to a type, standard, or regular pattern

• normal

• reversed polarity

• normal polarity

• magnetic reversal

today's magnetic field; magnets orient themselves to point north

• magnetic reversal

• reversed polarity

• normal polarity

• magnetism

magnetic field in which magnets orient themselves to point south

• reversed polarity

• magnetism

• normal polarity

• magnetic reversal

new ocenaic crust forms at a mid-ocean ridge as old oceanic crust moves away

• mid-ocean ridge

• slab-pull

• ridge push

• seafloor spreading

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3