The Law of Superposition 3D Model
Objectives
8E.2.2 – Explain the use of fossils, ice cores, composition of sedimentary rocks, faults,
and igneous rock formations found in rock layers as evidence of the history of the Earth
and its changing life forms. 1.07 – Prepare models or computer simulations to test
hypothesis and evaluate how data fits. 1.08 – Use oral and written language to
communicate findings and defend conclusions and scientific investigations.
Summary
The study of rock layers and structures, or geology, is a natural way to introduce
students to the fundamental principles that have shaped the planet Earth for billions of
years. The Law of Superposition states that in an undisturbed rock layer, the oldest
layer is at the bottom and the youngest is at the top. In this activity, students will
demonstrate their knowledge of Continental Drift, The Theory of Plate Tectonics, and
The Law of Superposition. Students will also display their knowledge of how
unconformities can create gaps in the Geologic Timeline.
Vocabulary
Law of Superposition
Unconformity
Fault
Weathering
Intrusion
Angular unconformity
Geologist
Igneous rock
Relative age
Project Scope
Students will create a 3 dimensional model representing the law of Superposition. You
must explain how unconformities (intrusion, angular unconformities, faults and erosion)
create gaps in the Geologic Time Scale. You must label the oldest and youngest layers,
and at least five of the vocabulary words listed above. In addition, students will write a
one-page essay, typed, double-spaced, with twelve-inch font. The essay, along with the
model, will be part of an oral presentation which should last least two minutes. It
should also include at least five of the above vocabulary words, explained in detail.
Due Date
The project due date is Friday, September 10. This is also the due date of the essay
and presentation. Models may be delivered no sooner than two days before its due
date. This is to deter copying and tampering. Please sign below to acknowledge that
you received a copy of the project sheet.
Student Signature: _____________________________
Date: __________
Parent Signature: ______________________________
Date: __________