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Density of Liquids - 10%

Posted by Jesus Jimenez in Physics - Echols on

I had an example of liquids stacked on top of one another, but SEPTA kind of mixed them together. The emulsifiers worked well. The cup had (in order): Honey, Dish Soap, Water, Oil.

I made a keynote too.
Viscosity .001
Viscosity .001
Viscosity .002
Viscosity .002
Viscosity .003
Viscosity .003
Viscosity .004
Viscosity .004
Viscosity .005
Viscosity .005
Viscosity .006
Viscosity .006
Viscosity .007
Viscosity .007

10% Project!

Posted by Gabrielle Nigro in Physics - Echols on

Click to see my Project (: 
-For my ten percent project i made a twitter instead of a Facebook for a famous scientist. The scientist of my choice was Alexander Graham Bell. He was the inventor of the telephone. On the twitter i was tweeting about his accomplishments, and famous quotes. There is only a few tweets but when i talk about it there is more of an understanding. In the bio it tells you about who Alexander Graham is and his background of his life is. Also i tweeted a few pictures of him and also of his inventions he made other then the telephone. Alexander Graham bell was always taken to just invent the telephone but little do many know that behind all the research of the telephone he came about to create and invent other things such as a hydrofoil, a hydrofoil is a boat that is lifted slightly up fromt he water and acts somewhat like a plane would. While tweeting i didn't just make it like i was the speaker. Alexander Graham bell was actually the one who was posting, i made it so you would think that he was the one posting and all the tweets came from him perspective. I hope you enjoy (: 

Charles Norman Dayona McNeil PSSA Project Ecosystems.

Posted by Charles Norman in Physics - Echols on

Ecosystems
What Is A Ecosystem?
A ecosystem is a biological community of interacting organisms and their physical environment.

What Kinds Of Ecosystems are there?

There are three types of major ecosystems:
1. Freshwater Ecosystems
2. Ocean Ecosystems
3. Terrestrial Ecosystems

What do ecosystems consist of?

An ecosystem consists of the biological and physical environment of an area. The biological environment is made up of all living organisms in the area. The physical environment includes the air, the earth, water, and the weather. All these biological and physical factors interact within the ecosystem. They compose a network of complex relationships that control population growth. Each plant and animal species has a role or way of life within the ecosystem. This is called its niche.


Tundra - The climate is extremely cold, dry, and the subsoil is permanently frozen. Plants these include lichens, low shrubs, and sedges. Some of the animals there are the Arctic fox, lemmings, polar bear, caribou, wolves, and many migratory birds.

Boreal Forest - The climate has cold winters, and a short growing season. Coniferous evergreen trees, chiefly balsam fir, black spruce, jack pine, and white spruce are plants you would find there. Animals include bears, wolves, moose, ducks, and loons.

Temperate Coniferous Forest - Has cool, middle and upper mountain slopes, coastal areas with mild winters and heavy rainfall. Coniferous evergreen trees, including cedar, hemlock, pine, and redwood are among the plant life. Bears, elk, mountain lions, and wolves are animals in the region.

Temperate Deciduous Forest - Cold winters, warm summers, moist. Broadleaf deciduous trees such as elm, maple, and oak. Animals there are deer, raccoons, squirrels, and many kinds of small birds.

Chaparral - Climate includes rain, mild winters, hot and dry summers, fires are common in this area. Plant life includes low shrubs with small and hard leaves. Coyotes, mule deer, and many species of lizards are animals in the region.

Desert - Extremely dry. Cati and other fleshy plants, sparse grasses, and small-leaved shrubs. This region also has lizards, snakes, many small rodents.

Grassland - Temperate, subhumid. Grasses and other herbaceous plants.
Antelope, pronghorn bison, buffaloes, wolves, and coyotes live in the area.

Savanna - Long dry season. Grasses and scattered clumps of trees. Giraffes, zebras, jackals, and lions live in the region.

Tropical RainForest - Warm and wet all year. Broadleaf evergreen trees, some palms and tree ferns, and climbing vines. Animals include bats, colorful birds, lizards, monkeys, and snakes.

PSSA EXAMPLE QUESTIONS

1. How many different major types of ecosystems are there? What are the major ecosystems?

2. What do ecosystems consist of?

3. What is the climate like in a tropical rain forrest?

4. What does the Savanna ecosystem consist of?

5. What is a ecosystem?
Screen Shot 2012-06-05 at 9.47.54 AM
Screen Shot 2012-06-05 at 9.47.54 AM

Physical and Chemical Properties

Posted by Dylan Cordivari in Physics - Echols on

                                 Physical and Chemical Properties

    Experiments that can be done to discover both chemical and physical properties of elements are actually very simple. For physical it only requires looking in detail at the element for its characteristics such are color, size, smell, freezing point and boiling point as well as many other things. The experiments are quite simple depending on the chemical but simply looking straight at it or using tools to get closer looks at it and then writing down the things that you see. For things such as boiling point or freezing sport all you have to do is heat the chemical until it reaches its boiling point and freeze the element until it reaches its freezing point. For chemical properties the best way to describe them is to quote a site from elmhurst college. “ It is quite difficult to define a chemical property without using the word "change". Eventually you should be able to look at the formula of a compound and state some chemical property. At this time this is very difficult to do and you are not expected to be able to do it.” The only real way to find out a chemical property is to introduce different conditions to a chemical and then discover its change or reaction to that condition.


Photos involving Physical Properties and some chemical:
Screen Shot 2012-04-15 at 8.29.32 PM
Screen Shot 2012-04-15 at 8.29.32 PM
Screen Shot 2012-04-15 at 8.29.45 PM
Screen Shot 2012-04-15 at 8.29.45 PM
Photos of Chemical change:
123h2balloon
123h2balloon
    Chemical and Physical properties are basically just the things that make a chemical what it is. Every chemical has these properties and they all need them to function the way that they do. Chemical properties are just the things that make a chemical tick. The way it reacts to other chemicals and conditions that it is introduced to as well as the reason why it acts that way which is often difficult to discover. Physical is simply the quite literal “Physical” characteristics of the chemical just like a person can be described a certain way so can chemicals.

Example Multiple choice questions:

1. When water Freezes it undergoes?

a. Sublimation
b. Physical change
c. Chemical change
d. The water cycle

2. Which type of process is the evaporation of a chemical?

A. Chemical change
b. Chemical Kinetics
c. Boiling
d. Physical change

3. When rain is made water vapor is turning into rain form. This is an example of...

a. Physical change
b. Chemical change
c. The rock cycle
d. Erosion

Arlana Brown Environmental Impact

Posted by Arlana Brown in Physics - Echols on

Environmental Impact


"Both natural processes and human activities are capable of changing the environment."-Study Island



Slow Changes to the environment include:

•Changing of the seasons

•Ecological succession


Rapid Changes to the environment include:

•Hurricanes

•Volcanic Eruptions

•Asteroid Impacts


Humans contribute to the environment in many ways, especially if they are treating the environment bad. 


•Habitat destruction

•Fossil fuels burning

•Genetically engineering organisms

•Pollution

•Greenhouse Gases



So we are going to focus on ecological succession and it's impact on the environment. Ecological succession is basically a process that a community undergoes and has a predictable change. Think of "I Am Legend" when you see the deers running around and trees growing in the streets. Basically that street has turned into a "forest" that's ecological succession.Example below:

                           

Over time as you can in 1840 it started out as a pond but ended up being a forest.  In 1870 you can that some of the plants are starting to get a little bigger and that the fish are still present. In 1900 algae are starting to fill up the pond. 1930 the pond is almost covered now with a tree on the side and algae almost filling the whole thing. In the last two years the trees are more present with the pond covered with algae and dirt.


Questions to think about:


What is ecological succession?

What is primary ecological succession?

Listed below is pictures of ecological succession which one shows it the most?

pondsuccession
pondsuccession

PHYS-005

Term
2011-12

Teacher