Author:
Utah Lesson Plans
Subject:
Science
Material Type:
Lesson, Lesson Plan
Level:
Middle School
Tags:
  • Lesson Plans
  • Science
  • UEN
    License:
    Creative Commons Attribution
    Language:
    English
    Media Formats:
    Text/HTML

    Finding the Density of Earth

    Finding the Density of Earth

    Overview

    Students will use rock samples to determine the density of Earth.

    Summary

    Students will use rock samples to determine the density of Earth.

    Materials

    • rocks of different densities such as basalt, granite, slate, iron (can be a nail, utensil or tool).
    • triple-beam balance
    • water
    • graduated cylinder
    • Student worksheet

     

    Instructional Procedures

    1. Ask students if it is possible to measure the density of an object as large as Earth. Give them a chance to talk to one another for a brief time and see if they can answer it. They may think about finding mass and volume but those are difficult measurements and calculations. They may decide that samples from various places in Earth could be used to represent the whole.
    2. Show them the rocks you have gathered and read the introduction.
    3. Indicate the location of materials and read the procedures with students.
    4. Allow time to work.
    5. Ask students to post their results on the board for Earths density and see how close they come to 5.5 g/cc.

     

    Bibliography

    Lesson Design by Jordan School District Teachers and Staff.