Rock Identification Lab

The three different types of rocks we have on earth are metamorphic rocks, igneous rocks, and sedimentary rocks.  Metamorphic rocks are rocks that were once a different type of rock but due to heat, time, and pressure transformed into another type.  Igneous rocks are formed through the cooling of magma or lava.  Sedimentary rocks are fragments of other rocks transported to water.  The following are examples of each of these types of rocks.

This is an example of marble.  Marble is a metamorphic rock formed from limestone.

This is a piece of obsidian rock.  Obsidian is an igneous rock formed from the quick cooling of molten rock.

This is a sample of a breccia rock.  Breccia is a sedimentary rock made up of angular pebbles cemented together.

The following is an example of a soil texture diagram.  This triangle is used to classify the types of soil.  There are twelve types of soils that soil can be classified as.  

All can be found on this link (Twelve Types of Soils).

Soil Texture Diagram

Sun Trajectory Lab

The goal of this lab was to determine the sun's trajectory based on an object fixed in the ground, the length of the object, and the cardinal direction the shadow pointed.  On January 27, 2014 Natalie Franklin performed an experiment in which she placed a pencil in the ground and measured the shadow the pencil cast.  She also measured the height of the pencil and determined the direction the shadow was pointing.  At the bottom I made a table filled with her data and also a screenshot of the sun's actual path using SunCalc.net.