ES 9 Earth History Review

Which is used in radioactive dating?

• carbon-14
• index fossils
• hydrochloric acid 
• law of superposition

What do earthquakes tell scientists about the history of the planet?

• earth’s climate is constantly changing.
• the continents of Earth are continually moving.
• Dinosaurs became extinct about 65 million years ago.
• The oceans are much deeper today than millions of years ago.

Where is evidence most often found to represent a record of Earth's history?

• air, lava, and fossils
• water, air, and rocks
• lava, water, and ice cores
• rocks, fossils, and ice cores

Which is the best predictor of the relative age of a layer of rock?

• thickness of the layer
• position of the layer
• length of the layer
• size of the layer

Which statement best describes the Law of Superposition?

• each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.
• In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.
• In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
• Rocks that form near volcanoes are older than surrounding rock.

Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?

• dinosaurs ate plants.
• dinosaurs were eaten by the mammals.
• dinosaurs lived on Earth before the mammals.

Paleozoic, Mesozoic & Cenozoic are all

• Epochs
• Eras
• Periods
• Eons

The disappearance of a species.

• Evolution
• Extinction
• Migration
• Mutation

What is the current period?

• Tertiary Period
• Jurassic Period
• Cretaceous Period
• Quaternary Period

Which is the correct order of geologic time? (Longest -> Shortest)

• Era >Eon >Period >Epoch
• Eon >Era >Period >Epoch
• Epoch >Period >Era >Eon
• Era >Eon > Epoch >Period