Continental Drift & Seafloor Spreading

What did Wegener name the large supercontinent where all the continents were joined together?

• Wegenerland

• Gondwanaland

• Laurasia

• Pangaea

Most geologists rejected Wegener's idea of Continental Drift because _________.

• He used too many pieces of evidence to support the idea.

• He wanted to know what Earth looked like millions of years ago, which is impossible.

• He couldn't identify what would cause continents to move around.

• They were afraid of the new idea.

What technology was used during WWII to detect enemy submarines and produce the first map of the seafloor?

• Sonar
• Radar
• GPS

Process by which new ocean crust forms.

• Seafloor spreading

• Continental drift

• Mid-ocean ridge

• Rift

Sea-floor spreading begins at the

• Deep ocean trench

• Mid-ocean ridge

• Continent's edge

What theory states that the continents were once part of a super continent called Pangaea and have moved slowly to their current locations over hundreds of millions of years.

• Oceanic wandering

• Land-form Evidence

• Continental Drift

• Fossil Distribution

How long did it take the continents to move into their current position?

• Hundreds of years

• Thousands of years

• Almost a million years

• Hundreds of millions of years

Who is the person credited with developing the theory of continental drift?

• Harry Hess

• Albert Einstein

• Alfred Wegener

• Isaac Newton

Younger sea floor crust is located...

• farther from the mid-ocean ridges

• at the mid ocean ridges

• near the continents

Scientists have observed that the continents move apart or come together at speeds of a few centimeters per ____.

• century

• year

• day

• decade