Front

Which rock layer contains the oldest fossil and the oldest rock? Options: Layer W, Layer X, Layer Y, Layer Z.

Back

Layer Z

Front

Which statement is true about geologic dating methods?

Back

Absolute geologic dating and relative geologic dating are two methods used by scientists to determine the age of geologic evidence.

Front

Dinosaurs lived about 70 million years ago. Which era did dinosaurs exist?

Back

Mesozoic

Front

Most of the coal on earth was formed around 300 million years ago. In which period did the coal most likely form?

Back

Carboniferous

Front

Fossils of fish have been found in areas far away from modern day rivers or oceans. Which best explains the location of these fossils?

Back

Oceans covered more of the land because sea level was higher in the past.

Front

Based on the diagram, which rock layers were most likely formed at the same time?

Back

R and X

Front

How is evidence used to yield the most accurate history of Earth?

Back

Sedimentary rock layers containing fossils would help determine the habitat during each time period.

Front

Which conclusion most likely explains the different fossils?

Back

The climate in the area was cold during earlier time periods, became warmer in later time periods, and is now even warmer.

Front

A scientist found fossils of reindeer and polar bears in lower layers and fossils of coyotes and squirrels in upper layers of a mountain. What does this suggest about the climate change over time?

Back

The climate was very cold in earlier time periods and became warmer in later time periods.

Front

A scientist cut into the side of a hill to study the layers of earth. In the lower layers, she found fossils of plants with long, deep root bases. In the upper layers, she found fossils of plants with wide, shallow roots bases. Which conclusion most likely explains the differences in the fossils?

Back

The amount of rainfall that the area received changed over time periods.