Module 1 Post Assessment

The lithospheric plates are of two types. Which is the thickest type?

• a. oceanic plate

• b. continental plate

• c. convergent plate

• d. divergent plate

In which layer of the earth is the lithosphere located?

• a. lowermost part of the mantle and crust

• b. in the inner core

• c. at the outer core

• d. uppermost part of the mantle and crust

The plates move slowly but, constantly and this movement is called tectonics and is therefore explained by this specific theory

• a. big bang theory

• b. origin of the universe

• c. theory of timeline

• d. plate tectonic theory

We know about the different existing continents. Scientists/experts concluded that it is from a big land mass called

• a. Laurasia

• b. Gondwana

• c. Panthalassa

• d. Pangaea

It seems that the crust and the upper layer of the mantle moves together and form plates on Earth on what particular layer?

• a. crust

• b. mantle

• c. lithosphere

• d. core

When did the supercontinent Pangaea begin to break apart?

• a. about 10,000 years ago

• b. about 10 million years ago

• c. about 200 million years ago

• d. about 570 million years ago

What two scientists proposed the theory of seafloor spreading in the early 1960s?

• a. Charles Darwin and James Hutton

• b. Harry Hess and Robert Dietz

• c. John Butler and Arthur Smite

• d. F. Vine and D. Mathews

The theory of plate tectonics was widely accepted during this period.

• a. the end of the 19th century

• b. about 1950

• c. about 1960

• d. about 1970

What age are the fossils of the reptile Mesosaurus found in Africa and South America that suggested that the two continents were once together?

• a. early Cenozoic

• b. late Mesozoic

• c. early Mesozoic

• d. late Paleozoic

Approximately how many lithospheric plates are there?

• a. about 3

• b. about 6

• c. about 12

• d. about 24