Earth Science Quiz

The Earth's core is believed to be composed primarily of

• oxygen and silicon

• aluminum and silicon

• iron and nickel

• carbon and iron

The map below shows the present-day locations of South America and Africa. Remains of Mesosaurus, an extinct freshwater reptile, have been found in similarly aged bedrock formed from lake sediments at locations X and Y. Which statement represents the most logical conclusion to draw from this evidence?

• Mesosaurus migrated across the ocean from location X to location Y.

• Mesosaurus came into existence on several widely separated continents at different times.

• The continents of South America and Africa were joined when Mesosaurus lived.

• The present climates at locations X and Y are similar.

The density of Earth’s crust is

• less than the density of the outer core but greater than the density of the mantle

• greater than the density of the outer core but less than the density of the mantle

• less than the density of both the outer core and the mantle

• greater than the density of both the outer core and the mantle

Where do convection currents happen?

• mantle

• crust

• outer core

• inner core

Identical rock types, identical fossils, and very similar mountain ranges are found on different continents that are separated by a wide ocean. Which of these best explains these observations?

• The continents seem to fit together like pieces of a puzzle.

• There are similar fossils on different continents.

• The North Pole and Antarctica are covered with ice.

Which layer of Earth do we live on?

• crust

• mantle

• inner core

• outer core

The San Andreas Fault is an example of a

• complex

• transform

• convergent

• divergent

Which type of tectonic plate boundary is represented in the cross-section?

• transform movement

• spreading movement

• divergent

• convergent

The most recently formed oceanic crust would be located closest to which type of boundary

• convergent

• transform

• divergent

• complex

What type of boundary is shown in the diagram below?

• divergent

• convergent

• transform

• strike slip