Cooper+M

= Electronic Paper In this article it talked about electronic signals, based on things that you do every day. So what is an electronic signal? This is a flowing current that carries information. This can be used to produce images, sounds, printed words, or other data. But remember there are other types of electronics too, such as electronic devices. Some electronic devices are calculators, phones, and computers. All electronic devices have a semiconductor, or a conductor. A semiconductor can conduct electricity only sometimes, this is used in the chip of a computer, and conductor can conduct electricity, so metal is a conductor. This leads to diodes; a diode only allows electric flow in one direction. This is used to convert alternating current to direct current. A transistor is a solid state component that is used to amplify signal, this is useful in a light switch, which we use every day in our homes. Integrated circuits are good for replacing transistors in things like computers. A computer uses millions of transistors, but to have a million transistors in a computer wouldn’t fit at all, so instead they used integrated circuits, and these are like compact transistors that are much smaller. = =Wiki Entry #2= In the rocket history article it talks all about rockets, from the first one to what we have today. The firs rocket like machine that was built was 100 B.C. (a long time ago). This invention was called Aeolipile, made by a Greek guy named hero. He used steam to propel his rocket forward. Eventually instead of using steam the Chinese started to use a better solution, something much more powerful, and much easier, this was gunpowder. These rockets or what you would call a real rocket started to be used in 1232. The reason that the Chinese ever came up with the rocket is because at the time they were at war with the Mongols. They got the idea from the arrows that flew, with a flame. So they eventually put together a rocket. The look of the first rocket was an arrow with a tube of gunpowder, as you see in the picture below. As time went on rockets weren’t in use very much after the war, until a Russian school teacher had thought of space travel by rocket, he never put a rocket together but instead decided to study space travel. Later on in the early twentieth century and American named Robert Goddard came with the idea of using liquid fuel for rockets, this changed everything. This idea got carried on to today’s rockets and how they are used. After finally finding the rocket to build America build the V2 rocket which is now used in today’s society. = Rocket label = nose cone-guides airflow throughout the rocket. body tube- main structure, usually hard paper. recovery system- device for getting the rocket to saftey. recovery wadding- protects the system from hot projection air gases. launch lug- guides rocket straigh off launch pad. fins-keep rocket traveling straight. motor mount- holds the rocket motor in place. rocket motor- what is used to propel the rocket. =Rocket stages animation= =media type="custom" key="9169090"=

=My rocket experiment, wiki entry.= In the results of my rocket launch, I found out that the weight wasn't a variable on how far the rocket flew. To test the all the rockets evenly we put them on a launch pad and shot them all off, all of the rockets had about the same height, when they were fired off. The height was judged by the kids in my class, Using a special tool to judge the degree at which the rocket peaked. The purpose of this experiment was to judge whether the weight of your rocket had to do with how high and or far your rocket could travel. When we flew the rocket we had painted it for two reasons, we had painted it for protection and we had painted it for design. What was figured when we painted the rocket was that the mass of the rocket went up. Another thing that I realized about our rockets was that with or without the pait it was a pretty durable thing, it was made out of cardboard and plastic, non of the other rockets fell apart, they stayed together and an accurate flight. One thing that we could have done to make the rocket flight better would to be to have a longer launch pad for more accuracy and other than that I found that the rocket flight was very accurate. This is my overview on my rocket experiment.

= The importance of astronomy in the search for life on mars =

I think that it is important that we know our astronomy in the journey to Mars for a couple reasons. First I think is the most important reason and that is for navigation. If we know what is around us we will have a better clue on where we are going to get to mars. Next I think that by knowing our astronomy it will be safer for us to navigate cause we know what is coming. Lastly I think that we will know how far things are from us and distances in between things. Overall I would say that knowing what is around us is one of the most important things for our journey to mars, from being safe from knowing where to go we have a much better chance at succeeding in our journey to mars.

To learn more about astronomy, go to this link: astronomy

=History on Robotics= The word robot was introduced by a Czech writer in his play Rossums Universal Robots. This play was introduced in 1920. He shows normal people being artificial and calls them robots. Next in 1927 a play had something similar to a robot called machine human...later a german science fiction writer made something called the three laws of robotics. Lastly in 1948 Norbert Weiner made something called the principales of cybernetics. These are all the first times that the thought of an electronic version of the human was though of. After all of these events that introduced the topic but never went anywhere with it. In 1961 though, there was change where people started to try and make robots. This first robot was built to take tiles, dip them in a dye, then place them down. Robots are used a ton in todays society, from doing things like helping us build in factories, or helping us test something, or building technology. They are much faster and more productive than humans and a great invention, I think the history of robotics is yet to come.

= Motors and Sensors = The way that motors can be used to move robots is by telling them on the computer what to do. It is like a mini car and has a little chain, but how it knows where to move is based on the commands you give it. You give it commands through the computer, based on patterns and number of wheel rotations for it to know. Really all the little Lego robot is is just a small computer.

It does this with a sensor. A sensor is a device that measures a signal and converts it so that it can be read by an observer. This is useful for the program because you have to be able to read and see what it is doing, without it, you wouldn’t know how to fix the problems of the robot.



= Life =

For something to be living it needs characteristics. There are many different characteristics of life, these characteristics are that it has response to something, it is made of cells, needs materials, it is homeostatic, it can reproduce, grow, adapt, and have respiration. These are all things and signs for life. Each of these have a definition that I will explain.

Made of Cells—

fundamental units of living things

Cells have many parts

3 types of cells- Animal cells, plant cells, bacteria cells

Need materials—

living things need water, minerals, air.

All living take what they need from the environment.

Homeostatic –

internally living things stay the same despite environmental changes.

Living things expend a great deal of energy to maintain homeostasis

Respond to stimuli –

stimulus- anything that causes living things to react

Responses- the reaction to a stimulus

2 types of responses

Positive- moves towards stimulus

Negative- moves away from stimulus

Reproduce – the process by what organisms produce offspring of their own kind.

Plants and animals reproduce in a variety of ways.

Sexual reproduction (two parents)

Asexual reproduction (one parent)

Pollen is plant sperm

Grow–all things develop from a lower or simpler to a higher or more complex form.

Embryo-newborn- child- adolescent- adult

Not all things grow at the same rate or reach the same size.

Adapted – modifications that make an organism suited to its way of life.

Evolution- the process by which characteristics of species change through time.

Respiration- releasing energy stored in the chemical bonds of sugars (food).

Producers create their own food Ways that people can find life on other planets is by detecting for all of these things just on another planet. They can do this by using robot or a human, then they just detect all of those rules, and if there is something out there that lives, then they have succesfully found something that lives.