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The social implications of computer control

Read the information and answer the following questions: 1.- What does CPU stand for and what is it? 2.- Give examples of machines controlled by microchips. 3.- What is the difference between microprocessors and computers? 4.- How have computers/microprocessors changed the work place? 5.- How have microprocessors changed hao we communicate?

Exam

Teacher, is it easy the test?

ENGLISH AND TECHNOLOGY

ENGLISH AND ELECTRICITY - I

Explaining circuits

1. V is electromotive force which we measure in volts.
2. R is resistance which we measure in ohms, and the symbol for ohms is the omega symbol.
3. I is intensity and that is our current flow that we measure in amps.
4. For now, we're (only) going to focus on using (three) simple formulas.
5. We can determine how many amps we have by dividing our volts by our resistance.
6. We can determine how many ohms we should have by dividing our voltage by our current.
7. We can determine how many volts we should have by multiplying current times resistance
8. By knowing two values we can calculate the unknown value, in this case our unknown value is...
9. As we want to find out how many amps are going to flow through our circuit, we take our voltage and divide it by our resistance

Do you remember the ohm´s law?

After watching the above video , answer the following questions:

1. - Which are the two types of current? What are the differences between them?

2. - Which units do we use to measure: Voltage (V o E), Current (I) and Resistance?

3. - How can we determine the value of R, V (E) o R? Try to explain with your own words how you´d calculate each value.

4. - How (with which unit) do we measure power?

5. - What does the term watts refers to?

2 Wich are the main differences between the two types of bitmap format you have mentioned in the question above.

The main differences are that the bmp spend more memory and has higher resolution than the jpg the jpg spend less memory and has less resolution.

4.-Explain what is meant by the term vector format.

A vector format is using mathematical equations of geometrical primitives such as points,lines,curves, and shapes, or poligon's to represent images in computer graphics.

Activity 1 .

1.-Explain what is meant by the term bitmap format.And give two examples of bitmap format file types.

Bitmap is a type of graphic composed of pixels in a grid.Each pixel or "bit" contains color information for the image.Some common bitmap formats are GIF and JPG.

3.- Name some disadvantages of using bitmap format graphics.

Bitmaps have two disadvantages. In terms of the amount of digital storage, bitmaps are memory intensive, and the higher the resolution, the larger the file size. The other disadvantage with bitmaps is when an image is enlarged, the individual coloured squares become visible and the illusion of a smooth image is lost to the viewer. This 'pixelation' makes the image look coarse.

5 .- Give some advantages and disadvantages of using vector format graphics.

Advantage:

-Each vector objet is scalable and can generally be resized without any loss of memory.

Disadvantage:

-Vector images though they are highly defined, are not appropiate for use in producing realistic-looking photos and images. Vector images have solid color and they are not conducive to sequences of subtle color tone and shade.

ENGLISH AND COMPUTER

Unit 1 - COMPUTERS AND THE PASSIVE VOICE

- When the computer is switched off, the contents of ROM are not lost.
- The main use of ROM memory in a computer is to store a program that runs when the computer is turned on.
- The contents of RAM can be changed because it only stores programs temporarily.
- Binary numbers are used by computers because they are very simple to make electronic circuits for.
- A binary number is represented by a pattern of 0 and 1.
- A single unit in binary is called a bit.
- Computer memory is measured is bytes.
- One byte is needed for each letter.

RAM and ROM

RAM and ROM are both types of memory used by personal computers.

1.- Which one of these types of memory is volatile?
2.- Explain the difference between volatile and non-volatile memory.
3. - Why does a personal computer need both of these types of memory?

COMPUTERS - Bits and bytes

Watch the video and answer the questions bellow:

1. How many bits are in one byte?
2. How many bytes are needed to store one character of text data?
3. How many bytes are needed to store the sentence shown below:

The quick brown fox jumps over the lazy dog

4. - Which is the largest number (decimal) you can represent with a byte?

5.- Sort the computer memory sizes listed below into increasing order of size with the smallest first and the biggest last:

10MB 100KB 5GB 50 MB 500KB

PLASTICS

Plastics are versatile and flexible materials .
All plastics are based on polymers and they are created by bonding molecules together.
The terms monomer and polymer are very important in the plastics industry. A monomer is a relatively small molecule that can chemically bond to other monomers, forming a polymer. Remember, all plastics are polymers.

There are different types of plastic:

Thermosettings plastics
Once 'set' these plastics cannot be reheated to soften, shape and mould. The bond between the molecules is very strong.

Thermoplastics
These plastics can be re-heated and therefore shaped in various ways. They become mouldable after reheating. Reheating and shaping can be repeated. The bond between the molecules is weak These types of plastics can be recycled.


1.- Read the text, looking for the meaning of those words you do not understand.
2.- Write down this vocabulary in your notebook

Cecilia I don't know how to do it.

Cecilia I have a problem with the powerpoint because I don't know how to put off the questions and put my questions¿?

If you can solve my problem coment this entry please.
Thanks.

Energy production and environmental damage

Electrical energy is produced in many ways.

Energy is sometimes produced in such a way that the environment around us is damaged.

But... in which way is the environment damaged? Answer the following questions to find out a bit more about how our planet is in danger...

http://www.technologystudent.com/energy1/less2.htm

Write down the new voacbulary you have learnt in your notebook.

A bit more about poer stations...

Now you Know the vocabukary you need to understand how a power station works, let´s see a bit more...

1. Write some advantages and disadvantages of the conventional power station (Fossil fuels)

2. Classify the energy sources in Renewable and Non renewable:

3. Explain the greenhouse effect and the acid rain.

THe video!!!!!!!!!!!!!!!!!!!!!!!

http://www.greenpeace.org/espana/campaigns/bosques/kit-kat-take-action-2

AN IDEA TO THE NEWSPAPER!

People! I have an idea to the english's newpaper work. To take advantages tu Lucy's idea (NGO) but like it is a lie, we can say that we are doing the *BOICOT to some multinational. I was thinking to NESTLE->KIT KAT, because just some days ago, I saw this video and it really affected me because I didn't know this(I like kit-kat haha). So........ say your opinions.
*BOICOT: a group of people who are agree to don't buy a product in orden to the multinational companies don't make more this product because it is damaging the world.

How Does a Power Station work?

A power station (also referred to as a generating station, power plant, or powerhouse) is an industrial facility for the generation of electric power.








Electrical power can be generated through CONVENTIONAL technology or ALTERNATIVE technology.
For understanding how does a power station work (in english, of course) you should work some vocabulary first....

Vocabulary:

1. Write the name of these words in your notebook:
· Heat:……………….
· To burn:…………..
· To boil:…………….
· Steam:……………..
· Coal:……………….
· Boiler:…………….
· Turbine:…………………
· To spin:…………………..
· Voltage:…………………..
· Power station:………………..
· Generator:……………………
· Cooling tower:……………..

2. In Power stations we can produce electricity in four steps. Read these steps and put them in order.
· Step _______: The steam makes a turbine spin
· Step ________: We burn the fuel to boil water and produce steam
· Step ________: The electricity goes to the transformers to produce the correct voltage.
· Step _______: The spinning turbine moves a generator and produces electricity.

3. Copy these steps in order in your notebook.