As Understood by Modern Geologists,the Principle of Uniformitarianism Implies That

question 47

Multiple Choice

As understood by modern geologists,the principle of uniformitarianism implies that

• A) the Earth has always had the same basic appearance that it has today.
• B) igneous,metamorphic,and sedimentary rocks are uniformly mixed throughout the crust.
• C) physical processes observed today (such as erosion and volcanic eruptions)have been active in the past at roughly the same rates.
• D) physical processes observed today (such as erosion and volcanic eruption)occurred much more rapidly in the past,quickly sculpting the Earth's surface.

---

Definitions:

Control Group

In experimental research, a group that does not receive the experimental treatment and is used as a benchmark to measure the effects of the treatment.

Basic Experimental Design

The fundamental structure of an experiment that outlines how to systematically test a hypothesis by manipulating variables and controlling conditions.

Randomly Assigning

The process of distributing subjects into groups in a way that each subject has an equal chance of being in any group.

Observing Participants

A research method that involves actively watching and sometimes interacting with participants in their natural settings to gather qualitative data.