# UTPA STEM/CBI Courses/Gravity and Atmospheric Pressure

Course Title: General Chemistry II

Lecture Topic: Gravity and Atmospheric Pressure

Instructor: Frank Dean

Institution: The University of Texas Pan American

## Backwards Design

Course Objectives

• Primary Objectives- By the end of the challenge the students will be able to:
• Use the equation P = h x d x g
• Understand the meaning of each of the variables in the equation.
• Sub Objectives- The objectives will require that students be able to:
• Understand the interaction of the density of a liquid with the force of gravity to explain the actual height of the column of liquid that is supported by the atmospheric pressure.
• Difficulties- Students may have difficulty:
• Understanding how the units for height, density, and the force of gravity combine to be equivalent to units of pressure
• Real-World Contexts- Ways that students can use this material in the real world:
• In an application to or in an interview with NASA for an internship or a work-study program

Model of Knowledge

• Concept Map
• Predicting the height of a column of a particular liquid supported by atmospheric pressure
• Identifying the device that can be used to measure atmospheric pressure
• Identifying how the device will be used to measure atmospheric pressure
• Content Priorities
• Enduring Understanding
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• Important to Do and Know
• Review the calculation for the pressure exerted on a column in the atmosphere
• Review the density of various liquids
• Review the reason for the units associated with the force of gravity
• Worth Being Familiar with
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Assessment of Learning

• Formative Assessment
• In Class (groups)
• Students will assemble into groups
• Homework (individual)
• Each student will write a report outside of class incorporating their own understanding of the solution after the work in groups.
• Summative Assessment
• An in-class quiz will individually test students over their ability to clearly describe the method of measuring the force of gravity on Mars.

## Legacy Cycle

OBJECTIVE

By the next class period, students will be able to:

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The objectives will require that students be able to:

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THE CHALLENGE

A group of astronauts takes an experiment to Mars to measure the force of gravity there. They know that on earth the pressure of the atmosphere will support a column of liquid of a certain height. How can they use this concept to calculate the Martian gravitational constant?

GENERATE IDEAS

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MULTIPLE PERSPECTIVES

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RESEARCH & REVISE

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GO PUBLIC

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