Benchmark 2 Part 2 Review Environmental Science

HS.E1U1.13 Wegener’s continental drift hypothesis stated that all the continents once joined together to form ____.

• two major supercontinents
• two major supercontinents and three smaller continents
• one major supercontinent
• three major supercontinents

HS.E1U1.13 The supercontinent in the continental drift hypothesis was called ____.

• Antartica
• Pangaea
• Laurasia
• Gondwana

HS.E1U1.13 Which of the following was NOT used in support of the continental drift hypothesis?

• fossil evidence
• paleomagnetism
• ancient climate
• fit of South America and Africa

HS.E1U1.13 Which explanation describes how the flow of magma carries the seafloor away from the central ridge in both directions?

• continental drift hypothesis
• theory of plate tectonics
• seafloor spreading
• none of these

HS.E1U1.13 Where is the oldest seafloor located?

• nearest to the central ridge
• in between the central ridge and continents
• inside of the mantle
• farthest away from the central ridge

HS.E1U1.13 New ocean crust is formed at ____.

• divergent boundaries
• convergent boundaries
• continental volcanic arcs
• transform fault boundaries

HS.E1U1.13 According to the theory of plate tectonics, ____.

• the asthenosphere is divided into plates
• the lithosphere is divided into plates
• the asthenosphere moves over the lithosphere
• the asthenosphere is strong and rigid

HS.E1U1.13 What is the major force that moves the plates?

• subduction
• convection currents
• seafloor spreading
• conduction

HS.E1U1.13 What type of boundary occurs where two plates move together, causing one plate to descend into the mantle beneath the other plate?

• transform fault boundary
• divergent boundary
• convergent boundary
• transitional boundary

HS.E1U1.13 At the type of boundary below, what process is happening?

• ocean-ocean subduction
• sliding/slipping
• seafloor spreading
• continent-continent collision