martes, 28 de septiembre de 2010

Earth's Atmosphere

Earth's Atmosphere

Mineral: a  solid material of Earth´s crust with a definite composition.


Luster: the way light bounces off mineral´s surface.




Streak: the color of the powder left when a mineral is rubbed against a hard,rough surface.


Hardnesshow well a mineral resists scratching.


Cleavage: the tendency of a mineral to break along flat surfaces.


Ore:a mineral containing a usefull substance.


Gem:mineral valued for being rare and beautiful.



Nonrenewable resource: a resource that cannot be replaced within a short period of time or at all.



Minerals of Earth's Crust

Earth's Changing Crust

Fault: a crack in the crust, whose sides show evidence of motion.



Geologist:a scientist who studies Earht.
 



Magma: hot, molten rock deep below Earht's surface.





Lava: magma that reaches Earht's surface.


Weathering: the breaking down of rocks into smaller pieces.


Erosion: the picking up and carrying away of pieces of rock.


Deposition: the dropping off of bits of eroded rock.


Meteorite:  a chunk of rock from space that strikes a surface (such as Earth or the Moon)




Solar System.

Album: Solar System


Introduction: The solar system is te Sun and the objects that are traveling around it.The Sun is a star but biggest,the Sun is a star similar to others star in the night, it appears biggest and bright in the day because it is much closer to Earth ; I hope you like it.



Mercury: Is the smallest planet in the Solar System, it completes three rotations about its axis for every two orbits, Mercury’s apparent magnitude varies between about  2.3 brighter than sirius and 5.7. The extremes occur when Mercury is close to the Sun in the sky. 



Venus: A. Venus is named after the Roman goddess of love. It is the planet closest in size to Earth. It is shrouded in a deep layer of clouds that reflect light very well. It is therefore a very bright object in our sky. Because they orbit very close to the sun.Aside from the sun and the moon.



Earth: It passed through the four stages of planetary development that other solid planets also experience to varying degrees. These four stages are: differentiation, flooding, and surface evolution.




Mars: good views of Mars occur every other year. Best views occur when most favorable opposition takes place, every 15 or 17 years. This happens when Mars is in opposition during the months of August or September. Mars' period of revolution around the Sun is about two years.




Jupiter: This giant planet has no solid surface.  Under its atmosphere is a large liquid ocean of hydrogen and water. The atmosphere slowly gets thicker and thicker until it becomes part of the ocean. The sky slowly becomes the ocean.



Saturn: Saturn was the god of agriculture, he was called Cronus by the Greeks.In many ways Saturn is similar to Jupiter, but it is much smaller.  Under the clouds of methane and helium the sky gradually turns into liquid until it becomes a giant ocean of liquid chemicals. 




Uranus: Uranus is very odd.  Unlike all the other planets and most of the moons in our Solar System Uranus spins on its side.  It is believed that long ago a very large object smashed into this planet.  The crash was so powerful that it completely changed the direction of Uranus' spin.




Neptune: Neptune was originally only the god of water, but was later extended to the ocean when he became associated with the Greek god Poseidon.Neptune has a giant storm much like the storm on Jupiter.   This storm is often called The Great Dark Spot.


Matter and Energy

Matter and Energy


Potential energy: energy stored in a object or material.




Conduction: movement of energy from a hot object that comes into contact with a cooler object; the material remains in place.

Convection: movements of energy by the flow of matter from place to place.



Radiation: movement of energy in the form of waves that can travel though empty space.




Wet cell battery: a batery containing liquid solution that produces the electricity current.



Dry cell battery: a battery that uses"dry chemicals" to produce an electric current.

Introduction: In this album learned many vocabularies very interest,thanks for you watch.

Chemical Change

Chemical Change

Physical Change: a change in size,shape,or state, without forming a new substance.


Chemical change: a change in matter that produces a new substance with different  properties from the original.


Chemical reaction: a chemical change of original substances into one or more new substances.


Reactant: one of the original substances reaction takes place.


Product: one of the new substances produced when a chemical reaction takes place.


Solids, Liquids and Gases

Solids, Liquids and Gases

State of matter: any of the forms matter can exist in.


Melting point: the temperature at which a solid changes state into a liquid.


Boiling point: the temperature at which liquid change state into a gas.


Freezing point: the temperature at which a liquid changes state into a solid.


What Matter is made of

What Matter is Made of


Element: a basic building block of matter ; a pure substance that cannot be broken down into anything simpler.


Compound: a chemical combination of 2 or more elements into a single substance.

Atom: the smallest unit of an element that still has the properties of the element.







Proton: a particle with a positive charge in the nucleus of an atom.




Neutron: an uncharged particle in the nucleus of an atom.


Electron: a particle with a negative charge moving around the nucleus of an atom.


Nucleus: the dense center part of an atom.

Molecule: a group of more than one atom joined together that acts like a single participle.


What Matter Is?

What Matter Is

Mass: a amount of matter in an object.


Volume: a amount  of space an object takes up.


Weight: ( on Earth) a measure of the force of gravity between Earth and an object






Density: a measure of how tightly packed matter is



Buoyancy: the upward push o an object by the liquid (or gas) the object is placed in



Conduct: allow heat or electricity to flow through readily

Insulatenot allow heat or electricity to flow through readily.