constallations

Hi,
today we are going to talk about constalations.They are pictures that are made by stars.The most common ones are the big dipper and Orion..Their names are usaly  Greek.They can either be an animal or person.Some constalitions are only seen in a single season and some are seen every season.sinse 1922 88 constalations are named and seen.

some constalations can have more than 10 stars.Some might have little ones in them.There are more than 100 that havn't been identified.

plate tectoics

Hi today we are going to talk about plate tectonics.plate tectonics is the theory that the earth is broken up into sections. The earth is broken up into 16 plates.Every year they move 1-12 cm.Each plate is ether a Continental plate and oceanic plate.The biggest plate is the pacific plate.The smallest is the Juan De fuca.

The plates move in three different ways.Convergent or to come together, divergent or to go opposite directions, and transform or slide past each other.When they move 3 things can happen.Either a mountain,trench, or earthquake.Most happen around the pacific plate.

mineral #4

Hi,
Today is the last day for single minerals.Today we will talk about the satounding sapphire.A sapphire is on the hardness scale at a level of  9.They are mostly every color but red.It's formula is AL2O3.It's streak is white.It's luster is Vitreous.It's melting point is 2030 c.

It was believed that the earth was resting on a sapphire.Out of all the colors of a sapphire blue is the best.The others are consiterd as fancy colors.A sapphire reprasents truth and faithfullness.It is the most scarsed gemstone.It was believed to have healing powers.It i the birth stone of septomber.

mineral 3

Hi,
Today we will be talking about diamonds.A diamond is the hardest mineral in the moths hardness scale.It has a straengh of 10.Diamonds can typically be yellow, brown to gray or coloress.It's formula is C.It has a coloress streak.It's luster is Adimintine.It's melting point is preassure dependent.

Diamonds are the status of love.They are the symbol of love like rubys.There are also used in wedding rings.There are also the to find conflict in afrcia..Because the diamond is the hardest mineral .It is sometimes used in drills.It is one of the 12 god minerals.