Earth Science: Earth Structure, Plate Tec, Conformity

IN what type of rocks would geologists most likely find evidence of past life forms

According to whole-mantle convection

Which title best describes the current geologic age

which is a geographic example of a transform fault boundary

Wegener's continental drift hypothesis stated that all continents once joined together to form

the greatest concentration of metals occurs in Earth's

A fault is

Earth's thin, rocky outer layer is it's

the time it takes for 50% of the nuclei in a radioactive sample to decay to its stable isotope

Which of the following ideas do geologists use as they study Earth

What likely contributed to the extinction that marks the end of the Mesozoic era

if a deep ocean trench is located adjacent to a continent, active volcanoes would likely be

Radiocarbon dating is used to date

the dating process that places geologic events in proper sequence is referred to as a

One kind of evidence that supports Wegener's hypotheses is that

What scientist is created with proposing the principle of uniformitarianism

New ocean crust is formed at

Physical/chemical/biological laws that work today also worked in the past. This principle is

In the plate tectonic theory, a plate can be made up of

Which 2 substance do geologists use in radiocarbon dating

the Himalayas in South Asia are examples of what type of plate boundary

In what type of rocks are most fossils found

the era of "ancient life" is known as the 

According to the theory of plate tectonics

the Red Sea is theorized to be the site of a recently formed

the footprints of a dinosaur are an example of what type of fossil

about 88% of Earth's history is within the expanse of time called the

According to the principle of cross-cutting relationships, an intrusive rock body is

what forms when one oceanic plate is forced beneath another plate

What length of time does the geologic time scale cover

This results when divergence occurs between two oceanic plates

In general, the law of superposition states that in an sequence of sedimentary rock, each layer

Nicolaus Steni proposed the most basic principle of relative dating, the law of

how does the age of seafloor sediments change with increasing distance from the ocean ridge

Earth's inner core is solid because of

the supercontinent in the continental drift hypothesis was called

the largest expanse of time on the geologic time scale is the

Deep ocean trenches are associated with

How are mammals distinct from reptiles

Radioactivity is produced when unstable nuclei

What important event in animal evolution marks the beginning of the Cambrain

Evidence about ancient climates indicates that

plate boundary, two plates grind past each other. Without destroying or creating lithosphere

In the early Paleozoic, life was restricted to the 

Because of the property of paleomagnetism

the Moho is

Volcanic island arcs are associated with what type of plate boundary

an unconformity is a(n)

A divergent boundary at two continental plates can result in a

Magnetic reversals

fossils are the

Why are subduction zones not commonly found at convergent Continental-continental boundaries

Example of a divergent plate boundary on continental lithosphere would be

the thermal convection that drives plate motion is caused by

Which of the following is important if an organism is to become a fossil

Index fossils allow geologists to

why did many plants die at the end of the mesozoic