Geologic History TEST 2019

For which segment of the Earth's geologic history are fossils rarely found?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

The diagram in the picture shows a geologic cross section of a region where no faulting has occurred.

Which statement about the geologic history of the area is best supported by the evidence in the diagram?

• Rocks A formed before rocks B.

• Rocks D folded after the deposition of rock B.

• Erosion took place before the deposition of B.

• A major event causing erosion on the present surface is ice.

The cartoon is a humorous look at geologic history. If Pleistocene mermaids had existed, their remains would be the same age a fossils of

• armored fish

• trilobites

• mastodonts

• dinosaurs

Which is the longest duration of the major intervals of geologic history?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

Look closely at the picture and sequence the events from the oldest to the most recent event.

• deposition of layers 1 to 7, intrusion of basalt, faulting

• deposition of layers 1 to 7, faulting, intrusion of basalt

• deposition of layers 7 to 1, intrusion of basalt, faulting

• deposition of layers 7 to 1, faulting, intrusion of basalt

Which NYS fossil is found in rocks of the same time period as Meekoceras?

• Condor

• Placoderm fish

• Eurypterus

• Ceolophysis

Which statement can best be supported by the fossil record?

• Humans have lived on Earth for most of Earth's history.

• The organisms on Earth have not changed.

• Dinosaurs existed on Earth more than 600 million years ago.

• Most life-forms that existed on Earth have become extinct.

A rock sample contained 10 grams of K-40 when it solidified, but now contains only 5 grams of K-40. What is the age of the rock?

• 5,700 years

• 1.3 billion years

• 2.6 billion years

• 4.5 billion years

Why do scientists use radioactive decay to help tell the age of fossils or igneous rocks?

• minerals are found in both living organisms and igneous rocks

• radioactive decay is only affected by an increase in temperature

• radioactive decay is a steady, but predictable rate

• Chuck Norris says so

Where did our first atmosphere come from?

• erosion of Earth's surface

• outgassing from Earth's interior

• decay of microorganisms in Earth's oceans

• radioactive decay of elements in Earth's core