VDA #9 Potential

1) Consider the potential of these 3-D machines, what object would you print that could help the world? Why?

 

 

 

       If I could print an object to help the world it would be more water filters.In many areas like Africa don't have clean or purified water to drink or use . Many diseases from unclean water are causing deaths. Some of them are Cholera which is a bacteria infection of the intestinal tract.It causes severe attacks of diarrhoea that, without treatment, can quickly lead to acute dehydration and death. Another disease is Guinea worm disease,People contract the disease (also known as Dracunculiasis) when drinking water contaminated with Dracunculus larvae. The larvae mature into large (up to a metre long) adult Guinea worms and leave the body after about a year, causing debilitating ulcers.I think more water filters would decrease the death rates.

 

 

 

 

2) From a selfish standpoint, what one item would you print for yourself? Why?


 

         If I could print one item for myself it would be a large building in Amman, Jordan. I would move my family there and they could live in the building. We would open a grocery store in the building. My dad and I will work there and make our paying for our family. We won't worry about where were going to live and how much it would be. We also will have a bussiness inside our building without worrying who the buildings for. I know my family would love if we had our own building in Amman,Jordan. I would also be happy because i will see my parents in peace.





 

 

 

VDA #8

                   
              
                  Economies of developed countries have a strong impact on CO2 emissions. The economies that are well developed have large factories and people who are more wealthy so they will buy cars and other things that pollute the country.Economies with countries that are not developed throughly is better because they won't have enough money to buy cars and other things that let out CO2. So economies with developed country let out lots of CO2.


References:

- http://dspace.mit.edu/bitstream/handle/1721.1/3607/MITJPSPGC_Rpt41.pdf?sequence=1
- http://www.epa.gov/climatechange/ghgemissions/gases/co2.html

VDA #7

URL:http://www.sciencenewsforkids.org/2013/01/cool-jobs-delving-into-dung/

1.What is the benefit of checking feces (poop, scat, dung, droppings) for hormones versus checking the blood of the animal?

 

                The benefit of checking feces is it tells you important information about the species like about the animals travel, diet and health.

2. What four things can you learn from an organism's droppings?

 

             four things you can learn from an organism's droppings:

 

1. From what animal are the organism's droppings from.

2. The diet of the organism

3. The health of the organism

4. The animals travel

3. What hormone is produced when some animals are stressed or starving?

              GC, or glucocorticoid is the hormone that animals produce when stressed or starving.

4. What did the researchers conclude contributed to the higher stress in orcas and how did the scientists come to that conclusion?

                        
              
           when the number of Chinook salmon, a favorite food, dropped, GC levels in the orca scat rose. Every august there was a large amount of fish dropped in the ocean.

5. Give two reasons why dung beetles climb atop the balls of dung.

      
            One reason is for them to eat peacefully. Another reason is for them to cool their feet.

6. What is the relationship between the Kakapo and the Hades flowers? In your answer, be sure to include how each species benefits the other.

 

     Kakapos have whiskerlike feathers just right for picking up pollen when they feed on a Hades blossom. When the parrots transferre that pollen from flower to flower, it would have pollinated the plant. Wood suspects kakapos could help the Hades flower thrive again.

 

7. Why is the Hades flower called "Hades" flower?

 

 

          The flower is named after a greek god,Hadas,who was the "God of the underworld", and the flower grows underground.

 

 Reference: http://en.wikipedia.org/wiki/Hades


Redo:

1.What is the benefit of checking feces (poop, scat, dung, droppings) for hormones versus checking the blood of the animal?

 

 

    The benefit of checking feces is it tells you important information about the species like about the animals travel, diet and health. If you only check the blood you only learn about the body and  ancestory.

4. What did the researchers conclude contributed to the higher stress in orcas and how did the scientists come to that conclusion?

    Around that time of august, GC levels in the whale poop dropped to their lowest levels, the team found. If the boats stressed the whales, then GC levels should have been high at that time  but it turns out that's not the case. Then Scientists thought  the number of Chinook salmon, a favorite food, dropped, GC levels in the orca scat rose. Every august there was a large amount of fish dropped in the ocean.

7. Why is the Hades flower called "Hades" flower?

The flower is named after a greek god,Hadas,who was the "God of the underworld", and the flower grows underground.

VDA # 6: Prune Fingers!

URL: http://www.sciencenewsforkids.org/2013/01/getting-a-grip/:

 

1. Scientists predict that prune fingers may serve a purpose. What purpose do they suggest prune fingers serve?

 

 

     scientists suggested that prunlike skin might work the same way as the tread on a tire, a pattern of ridges and grooves. these helps rolling rubber hold fast to wet pavement. In 2011, scientists suggested prunelike skin might work much the same way. The body’s nervous system , a network of cells used by the brain to send and receive signals to different parts of the body ,controls skin wrinkling. If the brain directs skin to become prunelike, those wrinkles must provide some advantage. Or so reasoned the researchers.

2. Do you think that the study performed in England was a valid study? Why or why not? 

 

        I think the study performed in england  didn't give all the information to answer why do we have prunelike fingers?  but, it did give some information that could lead to answering the question, for example, every participant moved the wet objects faster with wrinkled fingers. but wrinkled skin didn’t help anyone move the dry objects any faster.

 

 

 

3. How would you design an experiment to gather more data to support the suggestion that prune fingers serve a purpose?  (Be sure to include the number of people sampled, the independent and dependent variables and the duration or amount of time for your experiment.) 

      I would test 4 children and 4 adults and 4 elderly. I will let them put their hands in the water for about thirty minutes and then i will first give them a light object then a heavy object  to put in different boxes as fast as they can. I will record which age group took each object faster and which age group went faster with an object that was lighter and heavier. Then I would test their hands after2 hours in water and give them dry objects with the same weight.  

4. While scientists are attempting to determine the biological purpose for prune fingers, the article does not discuss why prune fingers happen in the first place.what biological process allows  for the skin on our hands and feet to turn wrinkly when submerged in water for a long period of time?

       

      Your hands turn wrinkly when submerged in water for a long time because water washes away an oily substance that protects your skin which is called sebum.When that happens, a certain type of dead cell on your skin will absorb the water causing the cells to swell up, but the layer underneath does not. So the swelling, combined with the places the skin is connected underneath to the non-swelled layer, causes your finger tips to look all wrinkly.

 

 http://www.todayifoundout.com/index.php/2010/11/why-fingers-wrinkle-in-water/

Redo:

1. Scientists predict that prune fingers may serve a purpose. What purpose do they suggest prune fingers serve?
 

prune fingers serve us by helping our fingers hold wet objects.

2. Do you think that the study performed in England was a valid study? Why or why not?

I think the study was valid because they did the experiment more than once. They also made the people try to carry objects with dry hands.


3. How would you design an experiment to gather more data to support the suggestion that prune fingers serve a purpose? (Be sure to include the number of people sampled, the independent and dependent variables and the duration or amount of time for your experiment.)

      I would test 20 people i would let them first move dry things with dry hands as fast as they can to boxes then I would let them put their hands in warm water for 1hour and let them move wet things as fast as they can to boxes, then i would see the difference of speed between each part of the experiment. this experiment might take about 1hour and a half for each person.( which includes the time period of the peoples hands in the water.My independent variables is the time, water and objects. My dependent variables are the people and results.




4. While scientists are attempting to determine the biological purpose for prune fingers, the article does not discuss why prune fingers happen in the first place.what biological process allows for the skin on our hands and feet to turn wrinkly when submerged in water for a long period of time?














        This biological process is called Osmosis.