endothermic

1.Endotherimic - reaction needs to constant energy imput, making it cold 

 Endothermic reactions are cold, absorbing heat from the surrounds.

It is made from 2 solid materials and water under the two mix the 2 substances. the cheimal change happens and makes the cup or water freeze because it is aborbing heat and releasing a cold breeze. It's like an ice pack you squeeze or pull on the handle and instantly becomes ÎCE and is an Ice pack. 

It is a chemal change because 2 solid materials became water and ice.

2. This will affect us in the future greatly because then we are away or far away from a nurse or hospital  we can have a pocket icepack and can instantly freeze up so we can heal or freeze our wound or bruse. you can bring the ice pack where ever you are. It's affecting the world today because nurses doesn't have to put an ice pack in a freezer and wait for it to freeze to put on a patient they can just use the instant freeze icepack from Endotherimic reaction making it freeze fast to put on patients who need it most and fast. 

4.http://discoveryexpress.weebly.com/homeblog/exothermic-vs-endothermic-chemistrys-give-and-take

Synthetic material - paper

 

Paper is a material that is nature and man made. 

Paper is from trees and it is also used to write on or draw on by man and can also be used to make shapes and 3d models which is very helpful in the future. 

Paper is found in the middle of the tree where man cuts the tree down to make sheets of paper. 

Paper is cheimal and physical property change because it is made from paper and cut down from tree the cheimal change is the tree wood is usually yelloe and the paper's color is white. 

Paper is very important in the future because we need it make money and to write letter to talk. P

Paper today is affecting our world because students learn how to write words and letter in paper and can also help them with visual learning. Paper is important because it can help us write down things before we forget or to talk to others with out talking or to people who have difficulty talking or using their voice. Paper will also put a negative affect on the earth because when we cut trees the oxygen won't be produced as much and there will be more carbon dioxide because there are less tree than before to absorb carbon and produce oxygen fresh air. Paper was also used to carry out law and to give messages. http://en.m.wikipedia.org/wiki/Environmental_impact_of_paper https://notebookpaperr.wordpress.com/2011/12/26/free-printable-notebook-paper/

Video reflection

E1. Thing of the past - what did you know about the periodic table before watching this video? 

2. Think present - what new insights have you gained about the elements/periodic table? What have you learned?

3. Think future - what would you like to know more about? What was the most interesting and what will you do with your new found knowledge? 

What I know what the periodic table before the video was that it was telling/showing what metal or gases or liquids and that there are this many atoms in the object of or in each element. 

2. What I learn was that it was not made by medaveen but he measured the elements and put them in a table. 

3. There are many elements and objects in space that can be useful or unuseful we can use the resources in space if we run out of materials in earth we can use it for humananity and to help earth. 

By.photocomix2

Mechanical Energy

     

                                              

Basic facts.

Mechanical energy can be either kinetic energy or potential energy and it's the sum which is work. 

 It the energy that associates with the motion and position of an object.Mechanical energy is physical so we can see what happens when mechanical happens.Work - work is done when a force acts on an object causing it to move, change shape, displace or do something. It's where mechanical energy begins or happens.Potential - is stored energy of position possessed by the object which is part of mechanical energy.Kinetic energy - energy of motion also part of mechanical energy.Mechanical energy- if the object has mechanical energy the object has the ability or able to do work. Mechanical energy allows and object to put force to another object to be or able to be displaced.Mechanical energy-if an object has or is with mechanical energy it is able to working on other object.Mechanical energy makes movement with an object to work on another object or when it is dropped. (mechanical/ Kinetic)

Mechanical energy helps us use objects to move other objects or to use them.Think about bowling,the bowling ball rolls really fast and knock the bowling pins down to score point.The bowling ball has mechanical energy when the person holding it swing it back giving it potential and kinetic energy which helps it to roll down the rally as soon as the person drops it to knock down the pins. The way mechanical energy is added with Kinetic and potential energy gives mechanical energy velocity and acceleration to make the bowling ball or any object go faster when the person lets go after the swing.

Sources:

Edited by Hydraton31

http://en.m.wikipedia.org/wiki/Mechanical

http://www.eschooltoday.com/energy/kinds-of-energy/what-is-mechanical-energy.html

http://www.physicsclassroom.com/class/energy/Lesson-1/Mechanical-Energy

Optical Illusions

The optical illusion is a way of tricking the brain to see something that may no be there.

The human brain put images together because it has learned to expect certain things. Sometimes the data gets confused. 

Optical illusions were used as magic tricks when they first appeared in China.

When we go to the movies it seems like we are watching real life action. In reality all we are seeing is a series of photographs that are exposed for a very short time and our brains do not see the separate still shot, our brains only see the figures moving on the screen. 

Computer monitors are optical illusions. The screen is made up of tiny red, green, and blue pixels. We are able to see many different colors, however, because our brains put the red, green, and blue dots together to make the colors. If u want to know about the color black in the computer there is really low pixels no color that is used to make the color black and the color white they use all the pixels in the computer.  

People who have spent their entire lives in a dense forest have difficulty judging distance and size in large open areas like the prairies. People do have difficulty judging distance because they see trees about everyday and 

www.kidskonnect.com/subjectindex/24-fun-games/fun-and-informational/234-optical-illusions.html

The picture belongs to super bang. http://thesuperbang.com/cool/insane-optical-illusions/

Final solar project blog post

A. 

The most important skill I have felt that I learned from this project, that we use the power of the sun to store heat and control the sun's rays to pin point where it needs to go and to cook food. 

Enginneers can use skills to use solar energy to cook food or use the sun's light to fulfill human needs and wants.Enginneers with this skill they can know the focal point of a mirror to burn somethings off the thing or to heat up a certain spot. 

B. If I could tell the future solar cookers, I would tell them to make a parabolic mirror.

The parabolic mirror is a good choice to make because with the focal point of the mirror it can make paper burn and the only hardest part is to find the focal point which is the main event.

 I would make a parabolic mirror next time because my first solar cooker didn't get that hot so I didn't get enough heat. 

What I would do differently is that I would get a parabolic mirror and get some sticks and put marshmello on top and put it right in the focal point while I let the cacolate melt on the gram cracker while the sun heats it up and put it together to make a good s'mores.