The Relative Age of Rocks

Relative age is different from absolute age because

• relative age compares rock with surrounding rock while absolute age is how many years since the rock was formed
• relative aging is more accurate than absolute aging
• absolute age compares rock with surrounding rock while relative age is how many years since the rock was formed.
• Relative age is used to determine rock age and absolute age is used to determine age of fossils

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Look at the diagram, what layer did animal E first show up in?         

• Layers #4
• Layers #5
• Layers #6
• Layers #7

What is the order of layers in this picture?

• QPONMLHIJK
• QONPMLHIJK
• QONMLHIJKP
• QONMLPHIJK

Which is older, A or D?

• A
• D

A break in Earth's crust is called

• an intrusion
• a fault
• a layer
• an inclusion

To be considered an index fossil, it had to have lived for a relatively short period of time.

• True
• False

Sometimes sea shells can be found in strange places.  Like deserts and on mountains. Other than plate boundaries moving what is another reason for this?

• The earth's tilt on its axis has changed over the years and the equator use to be farther south
• Sea levels use to be much lower 
• Plate boundary movement is the only correct explanation for marine fossils in strange places
• The sea levels use to be much higher and covered most of the land on earth. So marine fossils are found in places far from water

Trilobites are good __________ fossils because they were abundant and widespread geographically.

• cast
• index
• preserved
• mold
  carbonized