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Igneous Rocks- On-line Lab

10/27/2009

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Click here to give it a try!!!
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Identifying Minerals

10/21/2009

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By using the ESRT and your knowledge of how to identify minerals by their physical properties, you can now identify various popular minerals.  Remember to look at hardness, streak, luster, cleavage, fracture and color in order to specify which mineral is which.
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Remember Minerals?

10/19/2009

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Minerals are the earth’s inorganic solid material that have an orderly chemical structure and can be identified by physical properties.

 

Minerals are aggregated to form rocks  (collected together)

 

Moh’s Scale

 Scale used to identify hardness of a mineral

            1 very soft    (Talc- scratch with finger nail)

            7 and above are extremely hard  (quartz-  can’t even scratch with metal object)

 

Color- 

    2 types -  actual color of mineral

                -  the color of the streak on a piece of tile

 

Cleavage-  is the way it breaks apart

                        Number of sides after we smash it or break it apart

 

Fracture-  is the type of edges that form

 

Luster-  how it reflects light

 

Specific Gravity-  The density of the mineral as compared to water

 

 

Cleavage and Fracture has to do with the way it breaks

                        If I smash it with a hammer and it breaks in a specific way- it has cleavage

                        If I smash it and it doesn’t have a specific pattern-  it fractures
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This past week!

10/15/2009

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Over the last couple of days we focused on Topographic maps and isolines.  We paid special attention to profiles and gradients.  We tried our luck with an ESRT scavenger hunt.  We prepared for our Unit Exam and we are now set to start our next unit on Minerals.
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Focus on Topographic Maps

10/7/2009

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A topographic map is a map that allows you to see hills, mountains, slope and elevation.   Elevation is how high something is.

When we talk about elevation, or height, we compare land forms to sea level.  The level of the sea being 0.   All elevation is either above sea level or below sea level.

A topographic map actually looks at the land and shows us elevation.  We can also see how steep something is and how flat an area of land is.

A topographic map is simply a series of circular lines called contours.  These contour lines can never intersect.  They are called Isolines.  In this case, they show elevation.  The contour interval is the distance between the lines.

A topographic map will demonstrate changes in elevation.  The contour lines show and tell you a big story.  The closer the contours, the more steep the slope.  Contour lines that are farther away from each other are gentle slopes or even flat areas.  

Isolines can also be used for demonstrating other changes, like temperature zones.

Contour Worksheet done in class

Gradient Worksheet to do for HW
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Today's Class

10/2/2009

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We will review the use of the astrolab, while focusing on Polaris and then utilize the reference tables to help us understand the basics of Earth Science

Vocabulary-  Polaris, Zenith, gravity, longitude & lattitude
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    reftables.pdf.pdf
    File Size: 1136 kb
    File Type: pdf
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  • Home
  • Earth Sci Labs
  • 7th Grade ON-LINE TEXTBOOK
  • 7th Grade
    • 7th grade Lab Reports
    • Current events
    • 7th 1- Scientific Theory
    • 7th Lanforms & Maps >
      • Mountain Project
      • Mineral/ Gem Project
    • 7th 3- Geology >
      • Weathering & Erosion
      • Fossil Project
      • Plate Tectonics
      • Earthquakes
      • Unit Test Review
    • 7th Unit 4 Atoms >
      • 7th Atom Brochure
  • Earth Science by topic
  • Submit Homework
  • 8th Grade Units 1-4
    • Unit 1 Models of the Earth >
      • Metric Review
      • Chapter1 Review
      • Chapter 2
      • Topographic Maps
    • Unit 2 Rocks & Minerals >
      • Minerals
      • Rocks
    • Unit 3 Dynamic Crust >
      • Earthquakes
      • Earthquakes & Interior
      • Hot Spots
      • Volcano
      • Dynamic Crust Review >
        • Practice Tests
    • Unit 4 Shaping the Earth's Surface >
      • Weathering
      • chemical weathering
      • Another Weathering video
      • Erosion Videos
      • Glaciers >
        • Glacier Pwr points
      • Changing Earth
      • Unit Review
  • 8th Grade Units 5-9
    • Unit 5 Earth History >
      • Archean History
      • Geological Eras
      • Geologic Sequence Project
      • Unit 5 Review
    • Unit 6 & 7 Climate & Meteorology >
      • 801 Vacation Work
      • Weather Tracking HW Lab
      • Meteorology info
      • Station Models
      • Wind
      • Storms
      • Weather & Climate Review Tests
    • Unit 8 Earth & Space
  • 801 Test Review
  • Ways to pass the regents
  • files
  • Other Important Links
  • New Page