Info on Minerals plus Videos

Class, here are some videos on Minerals and their formation:

Remember, minerals have a crystal structure inside. This means the atoms are arranged in a perfect, repeating pattern over and over.
Here's are pictures of crystal structures for 2 minerals, both of which are made up of Carbon but the atoms are arranged differently:

Also, a mineral's fixed chemical formula might also be stated as having a definite chemical composition. They both mean the same thing, that the elements that make up that mineral are always found in the same ratio throughout the mineral. So for example, in the mineral Fluorite, which has a chemical formula of CaF2, there is always 1 Calcium atom attached to 2 Fluorine atoms, throughout the whole mineral. See the picture below:

Videos and Pictures of Earth's spheres and layers (REVIEW)

Class, here are good videos to help you for the next QUIZ. The first one is on Earth's spheres and the second one is on Earth's interior layers. They're short videos. Watch them for practice. Also, don't forget to study about Earth's atmosphere. Remember there is a BrainPop video on Earth's atmosphere. Enjoy!

     

Earth's System

Here are diagrams of Earth's interior layers and what they are composed of. Click on the pictures to see them bigger:

One last thing, here is an excellent website where you can find more great pictures on Earth's layers and an interactive video too. Just click here--> Layers of the Earth

Earth's Interior Layers Explained

Class, these are the notes from today's class on Earth's interior layers:

The Crust:

* The Earth’s crust is like the skin of an apple. It is very thin compared to the other three layers.

*The crust makes up 1% of the Earth.

* The crust of the Earth is broken into many pieces called tectonic plates.

The Mantle:

*The mantle is the layer below the crust.

*The mantle is the thickest layer of the Earth, where magma is found.

*The mantle is divided into two regions: the upper and lower sections.

The Outer Core:

* The core of the Earth is like a ball of very hot metals.

* The outer core is liquid.

* The outer core is made up of iron and nickel and is very dense.

The Inner Core:

* The inner core of the Earth has temperatures and pressures so great that the metals are squeezed together and are not able to move.

* The inner core is a solid.

Remember these facts about Models:

- A model is a simulation of a real event or thing.

- A model can be a physical object that is much smaller, more easily observed, or a simplified version of the real thing.

- Models can be mathematical.


HERE ARE SOME VIDEOS ON EARTH'S INTERIOR LAYERS:

Data Tables and Bar Graph Information

Information on Data tables and Bar Graphs. Click on the pictures to see them bigger:

These are ways to remember where to put each variable on the x- and y- axis, in case you forget:

- Remember to start with a 0 on the scale.

- In order to determine which scale to use, first find the range by taking the largest number in your data table and then subtracting it by the smallest number (ex: 68-22 = 46)

After you find the range, divide it by the number of boxes on the y-axis. Whatever decimal number you get, round it up to the nearest whole number and that is your scale (ex- 1.3 --> 2)

* Here is a link to show more information on bar graphs--> Bar Graph Info