Formation of Rock Layers

What is the study of rock layers called?

• Stratigraphy

• Stratification

• Superposition

• Cross-cutting

Which layer of the rocks follows the principle of superposition?

• Layer 1

• Layer 3

• Layer 4

• Layer 6

Which layer of the rocks shows the cross-cutting relationship?

• Layer 1

• Layer 3

• Layer 4

• Layer 6

Who originated the idea that the Earth is billions of years old?

• James Hutton

• Nicholas Steno

• Unknown Author

What are stratified rocks made of?

• Visible layers of sediments

• Crystalline structures

• Fragmental particles

• All of the above

What is the process used to determine the age of rocks and fossils?

• Relative dating

• Absolute dating

• Radioactive decay

• Stratigraphy

What is the half-life of uranium?

• 713 million years

• 1 billion years

• 500 million years

• Unknown

What is the unique feature of each decay process in radioactive dating?

• Half-life

• Parent atoms

• Daughter atoms

• Radioactive decay

What is the proportion of parent atoms/daughter atoms used to determine the age of an igneous rock?

• 1:1

• 2:1

• 1:2

• Depends on the rock

What is the method used to determine the relative age of rocks based on layering?

• Stratigraphy

• Stratification

• Superposition

• Cross-cutting