Vocabulary 4

Electromagnetism: the production of magnetism by electricity by magnets.

Electromagnetic spectrum: all the wavelengths of visible and invisible light in order from short (gamma rays) to long (radio).

Laser: a device that produces a thin stream of light of just a few close wavelengths.

Type of Pollution in my Neighborhood

Water Pollution 

Is the contamination of water bodies, it can produce serious problems in the place were you live and it is bad for our health.

Problem

In our country there are many communities with drinking water shortages, while else where it is lost as in this area of San Antonio where there is a broken water pipe for over a year.
This current of water passing outside my house every day a great quantity of waste wich is easy to form a way mosquito breeding sites and for that we must sweep the rubbish daily.

                                             

Solution

The authorities responsable for this problem should send a staff to the townships to see

where water leaks and repair this lost that can benefit others.

vocabulary 14

rock:a naturally formed solid in the crust, made up of one or more minerals.

igneus rock: a rock formed when melted rock material cools and hardness.

Sedimentary:rock:a rock made of bits of matter joined together.

fossil:any remains or imprint of living things of the past.

metamorphic rock:a rock formed  under heat and pressure.

humus: decayed plant or animal material in soil.

pollution: adding any harmful substances to Earth's land, water, or air.

rock cycle:rocks changing from one form into another in a never ending series of process.

Vocabulary 13

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.

hardness:how well a mineral resists scratching

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

ore:a mineral containing a usefull substance.

gem:a mineral valued for being rare and beautiful.

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

Examples of change of gravity on Earth

Coconuts falling for the gravity

Soil falling cause of the force of gravity

                                   A waterfall                                 

         dropping an objet are ocurring change of gravity on Earth.

And many other examples.

Solar System

Our Solar System is formed by a number of planets, celestial bodies and asteroids that orbit around the sun.

In this album we will talk about the eight planets of the Solar System and it's characteristics.

Mercury 

Is the innermost and smallest planet in the Solar System. It complete orbit around the Sun in 88 days, one day in Mercury are 59 days. The orbit of Mercury has the highest eccentricity of all the Solar System planets. It completes three rotations about its axis for every two orbits.

Venus

Is the second planet of the Solar System. It orbit the Sun every 224.7 Earht's day. The planet is named Venus after, the Roman goddness of love and beauty. Venus is an inferior planet from Earth. One day in Venus are 243 days.

Earth

Is the third planet of the Solar System. The Earth is the densest and fifht largest of the eight planets of the Solar System. It is the largest of the Solar System's four terrestrial planets. It orbit the Sun in 365 days and every 4 year the Earht have 366 days because one day have 24 1/4 hours.

Mars

Is the fourth planet of the Solar System. This planet was after named Roman god of war, Mars is often described as the Red Planet. One day in Mars are 24 1/2 hours.

Jupiter

Is the fifht planet of the Solar System. It is a giant gas with a mass. Jupiter is made of hydrogen and helium. Jupiter is classified as a giant gas. One day there are 9 hours  56 minutes.

Saturn

Is the sixth planet and the second largest planet of the Solar System. Saturn is also classified as a gas giant planet. Saturn have 9 rings. Because of Saturn's large mass and resulting gravitation. In Sturn one day is 10 hours 40 minutes.

Uranus

Is the seventh planet of the Solar System and the third largest and fourth most massive planet in the Solar System.

It is named after the ancient Greek deity of the sky Uranus.

Uranus is similar in composition to Neptune. One day in Uranus are 17 hours 14 minutes.

Neptune

Is the eight and farthest planet of the Solar System. Is the fourth largest planet by diameter and the third largest in mass. Neptune is similar in composition to Uranus and both have compositions. One day in Neptune are 16 hours 6 minutes.

Solar System

We have learned that the planets of our Solar System have different characteristics and the first four planets are made of solid and the other four before Mars are made of gas and liquids but all orbit around a center that is the Sun.

vocabulary 12

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)