2024 TEST: Relative Dating, Geologic Time, & Earth's Layers

What is the process of determining whether an object or event is older or younger than other objects or events?

• Absolute dating
• Relative dating
• Geological dating
• Radiometric dating

Which principle states that in an undisturbed sequence of rock layers, the oldest rocks are at the bottom and the youngest are at the top?

• Law of Superposition
• Law of Lateral Continuity
• Law of Original Horizontality
• Principle of Cross-Cutting Relationships

Which of the following statements describes Earth's asthenosphere?

• It's made of the crust and upper mantle, rigid and brittle.
• It's below the lithosphere and moves due to convection currents.
• It's above the lithosphere, and solid.
• it includes the deepest portions of the core

Earth's thickest layer is the _________________________.

• crust
• mantle
• outer core
• inner core

Earth's most dense layer is the __________________________.

• crust
• mantle
• outer core
• inner core

Examine the diagram showing the top layers of the Earth. Which section represents the lithosphere?

• Q
• R
• S
• T

Which statement is true as the depth within the Earth's interior increases?

• The density, temperature, and pressure of the Earth's interior increase.
• The density, temperature, and pressure of the Earth's interior decrease.
• The density and temperature of the Earth's interior increase, and the pressure decreases.
• The density and temperature of the Earth's interior decrease, and the pressure increases.

Which era is known as the 'Age of Reptiles'?

• Mesozoic Era
• Paleozoic Era
• Cenozoic Era
• Precambrian Era

During which time did the first single-celled organisms appear?

• Precambrian Time
• Paleozoic Era
• Mesozoic Era
• Cenozoic Era

Which rock layer is the oldest?

• B
• H
• M
• I