Steno's Principles

What is the primary evidence that dinosaurs existed in the past?

• Bones
• Plants
• Present day lizards
• No evidence

According to Steno's principle of superposition, where can the older layers of rocks be found?

• Top
• Middle
• Bottom
• Anywhere

The idea that sedimentary rocks are deposited in horizontal layers unless disturbed by forces within the Earth can best be explained by which of Steno's principles?

• Principle of Superposition
• Principle of Horizonallity 
• Principle of original lateral continuity
• Principle of faunal succession

The idea that sediments spread out in all directions until they either thin out or run into a barrier can be explained by which of Steno's principles?

• Principle of Superposition
• Principle of Horizonallity 
• Principle of original lateral continuity
• Principle of faunal succession

The idea that younger rock layers are deposited on top of older rock layers in an undisturbed section of sedimentary rock can best be explained by which of Steno's principles?

• Principle of Superposition
• Principle of Horizonallity 
• Principle of original lateral continuity
• Principle of faunal succession

Which of Steno's principles is responsible for the thin undisturbed layers found in the Grand Canyon?

• Principle of Superposition
• Principle of Horizonallity 
• Principle of original lateral continuity
• Principle of faunal succession

A gap in the rock record from erosion or from no rocks being deposited.

• Superposition
• Horizonallity 
• Unconformity
• Faunal succession

To which of these can the principles of Nicholas Steno be applied?

• the depth of the Grand Canyon
• the length of the river that runs through the Grand Canyon
• the age of the Grand Canyon
• the rock layers of the Grand Canyon

In an unconformity between two layers of rock, how is the upper layer usually described? 

• much older than the lower layer
• much younger than the lower layer
• same age
  the same age as the lower layer
• a little older than the lower layer

In an unconformity between two layers of rock, how is the lower layer usually described? 

• much older than the lower layer
• much younger than the lower layer
• same age
  the same age as the lower layer
• a little older than the lower layer