# Mass and Density of the Earth

#### Summary

This activity is intended as a follow-up to the Measuring the Size of the Earth and Measuring the Size of the Earth from Arizona activities. Students use data on the radius and volume of Earth, Newton's Law of Gravitational Attraction, and density equations to compute the mass and density of Earth.

Click here to view the full activity on the Kéyah Math Project website.

Click here to view the full activity on the Kéyah Math Project website.

## Learning Goals

**Objectives**

**Mathematical Skills**

## Context for Use

This activity consists of a set of quantitative problem-solving exercises that can be used as an in-class activity or an assignment in any introductory geology, geography, or Earth science course.

## Description and Teaching Materials

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## Teaching Notes and Tips

An Instructor's Guide to all Kéyah Math activities is available online from the Instructor Resources page on the Kéyah Math website.

## Assessment

Students record their work and answers in a word-processor document or a notebook, which can be submitted to the instructor for assessment. Solutions to these problems are available online from the Instructor Resources page on the Kéyah Math website.

## References and Resources

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