Gaby Elsusu

Questions from practical

1. Explain what causes convection currents

Temperature is basically what causes convection currents. This is proved because when heat comes in contact with the crystal it splits into particles due to the heat which then rises up to the cold surface. This is where it cools down and starts to sink to the base where it settles. Also if it is a cold convection the crystal starts at the top/surface and just drops straight to the bottom and settles.

2. Identify the direction of a ‘cold’ current

The direction of a cold current is downwards as the crystal starts at the top and cools down sinking to the bottom where it settles

Summary

During this pracical on convection currents I have investigated what happens in a hot convection and also what happens in a cold convection. I investigated the motion and what happens during these convection currents.

In this project I have basically learnt two main things and that is what happens in a hot convection and what happens in a cold convection. In a hot convection the crystal starts in the centre of a beaker at the bottom. the heat then forces it to split into many particles and rise up to the cold surface. Once it hits the surface it then cooles down and settles at the bottom of the beaker. In a cold convection the crystal is ontop of the water and just below the ice and what happens is that the ice makes it really cold so it drops straight to the bottom where it settles.  

1. What CST and IST grade what you allocate yourself for this project? Justify your response. I would give myself a high B or an A because e looked at the criteria and did exactly as it asked us to do for an A. The criteria has a column for getting an A and that is what we read and followed so our project should also be an A. For the individual criteria I also did the same thing and followed it to get an A.
2. What could you do tonight that would improve your grade? Go through all of my journals and diigo tags and revise them so that the can be better and more detailed.
3. What grade do you think your team will give you for teamwork? Why? they will probably give me an 4 out of 5 which is also an A because I have continusouly worked and helped my group during this project. 
4. Thinking about your presentation on Monday, what do you need to do to score an “A” grade? (hint: Look at the presentation skills). What could you do before Monday, to ensure you receive an “A”? To reicieve an A we need to have eye contact, clear speech, hand gestures, and be positive so that they ca understand what we have to say. We can do this be reharsing and practicing our speeches so that we are confident and we dont stuff up on the day of presentation.

1. Analyse why red sunsets can sometimes be more impressive when there is more dust or pollution in the air than usual. Because dust and pollution in the air act as little prisms that cause the light to bend. The different particles scatter and change the light by refracting it.

1. Describe what happens inside water droplets to cause a rainbow and explain how you can tell whether a rainbow is a primary or secondary. Small droplets of water behave like tiny prisms in the sky. Sometimes the colour will reach our eyes after it refractes off the prisms. You can also tell the difference between a primary and secondary rainbow by checking the order of the colours. A Primary rainbow is a band in the sky with red at the top and blue at the bottom. A Secondary rainbow is the reverse so the top band is blue and the bottom band is red.

Investigate the two types of sight defect- long-sightedness and short sightedness.

Find the following information:

1. What causes the defect Incorrect diet such as sugars and ceral is the fundamental defect in short sightedness. Long sightedness can be inherited (run in families) and a gene has also been identified that cause rare forms of hyperopia.               
2. The symptoms displayed symptoms displayed for short sightedness is that they can not see long distances and symptoms displayed for long sightedness is that they can not see close up objects (short distances).
3. Propose what sort of lens may be used to correct each vision. Concave lens are used to correct short sightedness and convex lens are used to correct long sightedness

Fibre optic technology offers many advantages when used in medical applications.

1. Describe how optical fibre may be used in medical applications It can be used in surgery to magnify the stomach, intestinal lining, and it locate images of tumors. It also can be used to produce an image of blood cells magnified 2000 times.

2. Identify the traditional medical techniques that optical fibres might replace optical fibres can replace operations, and having to guess something which can be wrong because you dont have an image of where it is.

3. Evaluate the benefits of fibre optic technology to medicine The benefits of fibre optic technology to medicine is that it is less painful as it just goes through your mouth compared to cutting your skin open.

• What influences your values about issues relating to your life? The media can actually influence my values about issues relating to my life. the way that they present it can actually be very persuasive and change what you think. Also role models that you look up to canm influence your values.

• Do you ever compare images/values presented by the media to those of the bible? If so why? If not why not? no i dont compare images/values from the media to those of the bible because when it is presented it makes you focus on something else and the bible really dosent can to your mind. Although when the media presents something religious e.g. a cross, church etc… that is when the bible compares to the images. 

• Has this project challenged you to examine your values? Why / Why not. Yes this project his challenged me to examine my values because it deals with things that relate to us and will be useful in our future. e.g. the social justice issue I am doing is teenage drinking and that issue involves me and it can really affect me.

• How do you feel the media portrays social justice issues? the media portrays social justice issues by adding in false information and statistics to make it look and sound worse than what it really is. the media just exagerates in what they do to publish a article.

• Has it been difficult to find articles on social justice issues why/why not? No not really because it has been in the news and newsreporters are all over the place. as soon as newsreporters here it the articles are on the internet in just seconds. Although it is hard to find videos on the social justice issue as there are not as many videos.

• Do you think that the media operates from a moral framework? Give evidence by using your research. no the media does not operate from a moral framework as they lie and give the public false information just to get them interested. Their moral maturity level is very low as they would do anything just to get their articles published/shown. e.g. Media Watch is a perfect example as it shows exactly what publishers try do do and the facts that they lie about.

1. Open and read the “How to write a critique” document in the resources menu.

Describe what is a critique. A critique involves identifying critical things to say about an article and resisting the temptation to describe rather than analyse

2. Outline the FOUR stages in a critique. the four stages in a critique are an introduction, a summary of the article, your anaylsis or critical commentary on the original text and your conclusion or evaluation

3. Can a critique be positive? Discuss. No a critique can not be positive because a critique is just a description stating facts and involves identifying critical things about the article.

4. Critique the accuracy of the following articles:

This article stats the the Beijing olympics are trying to trap us in. it says that they are digging big holes but they say it is for the olympics. also in Beijing they have been practicing slow motion fighting in the parks.
The Beijing Olympics: Are They A Trap?

This article states that a 2 year old donkey named Scraps is being called up to Pro Donkey Basketball League. The donkey Scraps has signed a 50 pound contract with Dairy land donkey ball. Scraps is really good and he does not flinch when the ball is passed to his rider and he always runs to the right hoop.