SOUND AND SURFACE

REFLECTION:THE BOUNCING  OF A SOUND WAVE OFF A SURFACE.

ABSORPTION:THE DISSAPERENCE OF A SOUND WAVE OFF A SURFACE.

ECHO:A REFLECTED SOUND WAVE.

ECHOLOCATION:THE FINDING OF AN OBJECT BY USIN REFLECTED SOUND.

DOPLER EFFECT:THE CHANGE IN FREQUENCY AS A SOURCE OF SOUND MOVE TOWARD OR AWAY FROM YOU.

QUALITY:THE DIFFERENT YOU HERT IN TWO SOUND OF THE SAME LOUDNESSAND PITCH.

FUNDAMENTAL FREQUENCY:THE LOWEST FREQUENCY AT WHICH AN OBJECT VIBRATES.

OVERTONE:ONE OF THE SERIES OF PITCHES THAT BLEND TO GIVE A SOUND ITS QUALITY.

INTRODUCTION :

REFLECTION IS THE BOUNCING OF A SOUND WAVE OFF A SURFACE IS CALLED REFLECTION.

CONCLUSION:

I LEARN IF A ECHOIS ATROG YOU WILL HEAR YOURSELF YELLING HELLOW.

Science Project About Polution

M y Polution is abuot air polution:what is air polution air polution is the introduction of chemical  particulate matter or biological matter that cause harm or discomfort  to humans or othr living organisimsor damage the natural inviroment into the atmosphere.

Air pollution from world ward 2 production.

nar of my house to much polution bcause is to much fabric for example: in thi picture you can see to much fabrics.

in 1 picture you can seesmog abaut chile and santiago

Examples of air polution is the fabrics the cars the green house and efect particulate contamination  increased U V radiation the acid rain the uncresed ozone consentration and finaly increased level of nitrogen oxides you can see in this pictures air polution :

   

 POLLLUTION :Polution mean adding any harmfull or many subtance to earth land water on air.

The other pollution that is near of my house is water pollution What is water pollution ?Water pollution is the contamination of water bodies of laks river ocean and ground water.for exaple this picture :

 

near of my house is to much water pollution and air pollution .

INTRODUCTION:

 Are many type of pollution for example air pollution water pollution soil pollution noise pollution radioactive pollution  thermal pollution  ligh pollution vissual pollution personal pollution and finaly fighting pollution.

CONCLOSION :

I learn that are many typs of pollution in the world and also that near of my are air pollution and water pollution.

BY NICOLE HERRERA #16

The Solar System

Solar System :the sun the object that are travrelin around  it

Planet : any of the nine large body that travels around th sun and shine by reflectin its light.

Gravity A force of attraction or pull between any object and any object and any other object around it .

Inertia : the tendecy of a moving object to keep moving in a straight line .

Lithosphere the hard outer layer of earth about 100 kilometers thick .

Crust : the rocky surface that makes up to the top of the lithosphere.

Resource Any material that help support life on earth.

Hydrosphere earth water.

Introduction:

IN THE SPACE ARE 8 PLANET THAT ARE

THE SUN

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

VRANUS

NEPTUNE

THIS RAE THE 8 PLANET THAT AR IN THE SPACE.

CONCLUSION: I LEARN THAT THE SOLAR SYSTEM THAT THE SUN AND THE OBJECT THAT TRAVELIN AROUND IT.

Invisible light

Radio Wave:are the longest waves of the electromagnetic spectrum .

Microwave:is a short wave radio wavs water in food absolut microwavereadily microwave are short wave radio waves.

Infrared light:means just beyond red

Ultraviolet (UV) LIGHT IS MADE UP OF WAVE JUST SHORTER THAN VISIBLE LIGHT ON THE SPECTRUM. 

XRAYS:the shorter wavelenght of the spectrum xrays and gammarays .

introdoction:the xrats have a greatpenetring power.

What Matter Is Made Of

Element : A basic building block of matter, apure susbtance that cannot be broken down into anything simpler

Compound : Achmical conbination of two or more elmnts into a single substance

.

Atom: The smallst unit of an elment that still has the propertis of th elmnt .

Proton : Aparticle with a positive charg in the nuclous of an atom

Neutron : An uncharged particle in th nucleous  of an atom

Elctron. A particle with a ngative charge moving around the nuclous of an atom.

Nucleous: The dense center part of an atom.

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

INTRODUCTION

The atom ar made of protons neutron and electron .

WHAT MATTER IS

Mass: The amount of matter in and object

Volume: The amount of space and object take up

Weight (on earth): measure of the force gravity between earth and object

Density: A measure of  jow tightly tacked matter is amount of mass contain in a given volume

Buoyancy: The upward push on and object by the liquid (orgas) the object is place in

Conduct: Allow heat or electricity to flow through readiny

Insulate: Hot allow heat or electricity to flow through readilyng

Light and Mirrors

Bioluminescence: Light produced by living organisms

Light Ray: A straight - line beam of light as it travels outward from is source

Law of Reflection: The angle of as incoming light ray equals the angle of the reflected ray

Cocave Mirror: A mirror that curves in on the shiny side

Convex Mirror: A mirror that curves out on the shiny side