The earth was once an anaerobic place. This pre-biotic planet had little or no oxygen in the atmosphere. Two scientists recreated the conditions of the pre-biotic earth with an experiment using series of flasks and tubes. Some of these conditions included reducing high radiation levels, high temperatures, and having electrical storms. The first thing that was done was that water was boiled down to form vapor, and then was mixed with methane, ammonia, and hydrogen. The mixture of these three gases were exposed to an electrical discharge (sparks) to reenact lightening. After, the mixture was cooled and after one week the mixture contained simple amino acids. Based on the findings, it was then figured that under the hypothesized conditions of pre-biotic earth, organic molecules can be formed. This was when the four processes needed for the spontaneous origin of life on earth were discovered. The first process was the non-living synthesis of the simple organic molecule. Organic synthesis requires the presence of a range or inorganic molecules and an energy source to combine them into organic forms. Some locations where synthesis organic molecules might occur are deep see vents, which are regions of the ocean floor where superheated water is released from the earth's crust. Another location are volcanoes, the volcano activity on land could provide thermal activity. Two more locations where synthesis in organic molecules might happen are alternative wet and dry conditions and space (meteorites). Comets are examples that contain a variety of organic molecules. The second process is that the organic molecules assemble into polymers making them a more complex molecule. The third process is the self-replication of the formed polymers. RNA had a role in the origin of life. RNA had two properties that would have allowed it to function. One is part of the third process and how RNA is able to self-replicate. RNA is able to store information just like DNA. The short sequences of RNA are able to duplicate other molecules of RNA. The second aspect of what RNA does is that it can act as a catalyst. The final process needed for a spontaneous origin of life on earth is the packaging of these molecules into membranes with an internal chemistry different from their surroundings. Living cells may have been preceded by protobionts with an internal chemical…
The aim of this experiment is to design and conduct an investigation into physiological changes during exercise and to explore the body's response to vigorous exercise by measuring heart rate and blood pressure during physical exertion. My hypothesis states that the physiological changes in my body (heart rate and blood pressure) during physical exercise will both increase. The reasons for carrying out this investigation is to find out what the bodily responses are whilst exerting large…
The study of organisms and their living and non-living environment
Abiotic Factors- A non-living factor in an ecosystem
Biotic Factors- A living factor in an ecosystem
Ecotones- The transition area between ecosystems
Artificial Ecosystem- Is an ecosystem that is planned and maintained by humans
Natural Ecosystem- An ecosystem where the abiotic and biotic factors are aloud to react freely with one another
Ecological Niche- An organisms place in the ecosystem, including the time…
will determine whether or not the different lights will affect the growth or height (in inches) of a plant. If one light works just as well as the other the Earth will benefit from having an alternative method of growing plants. If it doesn’t work then we as a people need to find an alternative to growing plants in order to protect the earth and everyone on it.
Sunlight will allow plants to grow faster and taller than UV light. I feel that sunlight will allow a plant to grow faster…
Quick Quiz. One third to one half of the test will be these questions.
The definitions of Astronomical Objects, Units and Motions on page 6
Astronomical units is earths average orbital distance (150 million km), ecliptic plane is Earth’s orbital path which is defined by a flat plane, and the axis tilt is earths tilt that is 23.5 degrees from a line perpendicular to the ecliptic plane.
* star- a large, glowing ball of gas that generates heat and light through…
Earth, also known as "the Earth" and "the World", is the third planet from the Sun and the densest planet in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the "Blue Planet", the "Blue Marble", Terra or "Gaia".
According to evidence from sources such as radiometric dating, Earth was formed around four and a half billion years ago. Within its first billion years, life appeared in its oceans and began to affect its…
The Stanford Prison Experiment
The Stanford prison experiment is the one of the most controversial psychological studies in the 20th
century. This theory has its critics and supporters, but the results of the experiment became an
interesting look on the human psyche in the form of role behavior and their expressions. In the year of
1971, a professor and psychologist named Dr. Philip Zimbardo has a theory that one’s nature didn’t
impress their roles in what they do, but rather one’s role had an impact…
1. Who was Ptolemy: Why do you think his geocentric model of the universe found support with the Church?
His idea found support because the Church’s belief was that God created Earth to be a special place, where there was life and nature. Therefore, surely Earth would be the center of the universe.
2. How did Copernicus challenge the geocentric model of the universe?
Copernicus realized that the movements of the planets…
February 4, 2015
Precision and Accuracy of Scientific Glassware
The objective of this experiment is to learn which scientific glassware should be used in various circumstances, how to measure volume and mass and how to record laboratory data and observations. Become familiar with significant figures, errors, precision and accuracy associated with the various tools and techniques. To Contain Glassware you will need two Erlenemeyer Flasks, one 125 mL to measure…
Name: Zain Abid
Period # 2
Mr. Cardenas & RAj
Scientific Revolution is the Ideas and Inventions of Scientists By which they changed the thinking way of peoples. Scientific Revolution brought conflict B/W Religious peoples and Scientists. It had Many benefits upon society. Scientists introduced the peoples with Truth and Reality and invented new Devices. The Scientific Revolution affected society positively. Scientists brought new theories with facts and challenged the status quo…
Review of “Science and Scientific Research”
The chapter covering the topics of Science and Scientific Research by Anol Bhattacherjee, begin with the question of “What is research?”, Bhattacherjee breaks the chapter into hierarchical topics starting with a basic understanding and definition of science to begin answering that question. He further goes into more depth covering fundamental aspects of scientific knowledge, scientific research, scientific method, the types of scientific research, and the…