SG 01 - Geology

How is absolute age different from relative age?

• Absolute age references the rock layers above and below to give an age
• Relative age uses Carbon 14 dating to give a specific age in years
• Absolute age does not use rock layers but uses Carbon 14 to give an actual age

Which best describes the reason scientists would want to analyze the air trapped in ice cores?

• To study how much oxygen was in the ice
• To learn how the atmosphere changed over time
• To determine how many gas bubbles were present in the air

Which is the correct order of events from oldest to youngest?

• T, P, Fault, W, S
• S, W, P, Fault, T
• Fault, S, W, P, T

Why are Trilobites important to Earth's layers?

• They are used to tell the color differences between earth's layers
• They are index fossils used to tell the relative age of rock layers
• They are used to tell the age of unconformities

Which best describes the relationship between rock layers and index fossils?

• Different rock layers can be determined to be the same relative age if they contain the same index fossils.
• Different rock layers can be determined to be the same exact age if they contain the same index fossils.
• Different rock layers can be compared to determine the exact age of index fossils.

Fossilized trilobites have been found in the second of three rock layers during a geologic dig. Which best represents the age of the trilobites?

• They are younger than all of the rock layers.
• They are the same age as the second rock layer.
• They are the older than all of the rock layers.

Students on a field trip along the Cape Fear River in Fayetteville, NC found some fossils of coral. Which conclusion can be made concerning this?

• Salt water changes coral into fossils
• The reefs formed in a freshwater lake
• The sea level has changed over time

Why are fossils most likely to be found in sedimentary rock samples?

• They preserved fossils with intense heat and pressure
• They are formed in layers that trap the material for fossilization
• They are much stronger than igneous or metamorphic rocks

Which best describes the age of Organism Y to the age of Organism X?

• They are the same age
• Organism Y is older
• Organism X is older

Which of these would help determine the changes in a plant species over geologic time?

• Examining the number of plants in a given area
• Examining the types of seeds the plant produces
• Examining the fossil record of the plant