8th Check In 1 Review

In which time period are we currently living?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

• Preserved fossils

• Index fossils

• Imprints

• Radioactive dating

Preserved remains of plants and animals from the remote past are called?

• Sedimentary rocks

• Radioactive dating

• Decayed organisms

• Fossils

The Law of Superposition states

• Younger rocks layers are on top of older rock layers

• Fossils are found in sedimentary rocks

• Older rock layers are on top of younger rock layers

• Absolute age dating

Which era was the longest, taking up 88% of geologic time?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

What does absolute age tell us about a rock layer or fossil?

• The 'exact' age of a fossil determined by radiometric dating

• The relative age of a fossil determined by radiometric dating

• Younger rock layers sit on top of older rock layers

• Older rock layers sit on top of younger rock layers

Which fossil would make the best index fossil?

• Beetle

• Flower

• Frog

• Fish

What two methods are used for determining the age of rocks and fossils?

• Relative and Absolute Dating

• Carbon and Water Dating

• Sedimentary and Igneous Rocks

• Spatial and Layered Dating

Use relative age dating to put the rock layers in correct order from oldest to youngest.

• B, D, A, E, C

• C, E, D, A, B

• A, C, E, D, B

• C, E, D, B, A

Which is the youngest rock layer?

• Siltstone

• Conglomerate

• Mudstone

• Limestone