A researcher examines fossils found in some rock layers. The fossils shown were found in undisturbed layers of rock. Which fossil is the youngest?

• Trilobites

• Armored fish

• Dinosaurs

• Early horses

A baby woolly mammoth was discovered frozen for 40,000 years. What type of fossil would this be?

• Mold

• Trace

• Preserved

• Carbonized

A type of rock that forms from cooled or hardened magma.

• Igneous rock

• Sedimentary rock

• Bedrock

• Metamorphic rock

Where has much of the evidence for the evolution of life forms been obtained from?

• Radioactive dating

• Studying the life span of present-day animals

• Relative dating

• Examining fossils preserved in rock

Identical rock types, identical fossils, and very similar mountain ranges have been found on different continents separated by wide oceans. What best explains this phenomena?

• These continents were once joined together

• Some things are common and found everywhere on earth

• Animals were able to travel to separate continents by water or air

• It really is just a coincident and means nothing

What question could be answered by studying fossils?

• How do coral reefs form in the ocean?

• How have mountains formed over time?

• How have certain animals evolved over time?

• How do earthquakes occur?

What geologic event has happened most recently?

• A

• F

• Y

• D

Which layer is an intrusion?

• F

• X

• Y

• A

The movement of the continents can be attributed to -----.

• Subduction zones

• Hot spots underneath continents

• Earthquakes underneath the ocean

• Convection currents in the mantle

• A

• B

• C

• D