Oct 27, 2008
Class Response- Energy roles
Some organisms, like trees and almost all types of plants, can make their own food and they are called producers. Producers use a source of energy, like sunlight, to make their own food. Producers are at the bottom of the food chain and they are the source of all food in an ecosystem.
Consumers- Consumers are organisms who get their food directly or indirectly from producers. Because they can't make their own food they rely on producers for food and energy. There are three different types of consumers. The three types are:
Herbivores- organisms who only eat plants. Some examples are grasshoppers and rabbits.
Carnivores- organisms that only eat other animals. Some examples are spiders and snakes.
Omnivores- organisms eat both plants and animals. Some examples are bears and humans.
Decomposers- After animals die, organisms called decomposers eat their dead matter. Decomposers, such as as molds and mushrooms, are very important to the ecosystems because they get rid of animals' dead bodies. They also return the important materials of the dead animals back to the soil and water.
Oct 13, 2008
Current event- Solar powered MP3
I got my information from: http://tech.yahoo.com/news/zd/20081013/tc_zd/232954
May 29, 2008
Class response-Layers ot the atmosphere
In school for a couple of weeks we have been about the weather. A couple of days ago we learned about the layers of the atmosphere. There are four main and important layers of the atmosphere. The names of those layers are:troposphere, the stratosphere, the mesosphere and the thermosphere. The troposphere is the most lowest layer of the atmosphere and the most closest to the earth. This is where most of the weather occurs and most of the clouds are here. The troposphere is 12-15 km above the ground. The second layer that is the closest to the ground is the stratosphere. The lower part of the stratosphere is VERY cold but the temperature gets warmer and warmer as you reach the top because that's where the ozone layer is. The stratosphere extends from the top of the troposphere to 50 km above ground. The third layer that is closest to the ground is the mesosphere. The mesosphere is the coldest layer of the atmosphere with temperatures near -90 degrees Celsius and protects the earth from meteors. The mesosphere rises from about 50 km to 80 km above ground. The outer most layer of the atmosphere is the thermosphere. The thermosphere has no definite end. It just keeps going and going and going. It is broken up into two layers called the ionosphere and the exosphere. In the ionosphere gas molecules are electrically charged and all the satellites are in the exosphere. Here is a diagram that show all the layer of the atmosphere: (if you click on it, it will enlarge!)
If you want to learn more about the atmosphere you can go to this website: http://www.srh.noaa.gov/jetstream/atmos/layers.htm
May 28, 2008
Extra Credit!!
Desert Places
by: Robert Frost
Snow falling and night falling fast, oh, fast
In a field I looked into going past,
And the ground almost covered smooth in snow,
But a few weeds and stubble showing last.
The woods around it have it--it is theirs.
All animals are smothered in their lairs.
I am too absent-spirited to count;
The loneliness includes me unawares.
And lonely as it is that loneliness
Will be more lonely ere it will be less--
A blanker whiteness of benighted snow
With no expression, nothing to express.
They cannot scare me with their empty spaces
Between stars--on stars where no human race is.
I have it in me so much nearer home
To scare myself with my own desert places.
May 7, 2008
Class response-- Arctic Tale
Apr 22, 2008
Mar 3, 2008
Robots and humans? living side by side??
http://www.cnn.com/2008/TECH/ptech/03/03/robot.nation.ap/index.html?section=cnn_latest