Three Major Theories Explaining The Extinction Of The Dinosaurs

So what killed the dinosaurs? Without having any background education in science it is hard for the general public to comprehend such matters and they rely on the knowledge of the scientists in this field. Although there has been much research on the subject nobody has come up with a conclusive answer. And we are left to read the countless articles, all having their own opinions as to the mass extinction. One such theory is that a shift in the solar system could have caused the mass destruction. According to an article published in Nature magazine,

Giant Impact Theory. This theory states that an object roughly the size of Mars struck the Earth

Nobody knows for sure exactly how the dinosaurs became extinct. However scientists have speculated for decades about possible events that caused the dinosaurs to die out. Possibilities range from asteroids, to volcanoes, to climate changes. One of the more popular or well-known extinction theories involves the belief that an asteroid struck the Earth, causing devastating effects, and triggering mass extinctions around the end of the Cretaceous period.

Once in the air, the sulphur would have rapidly transformed into sulphuric acid, generating massive amounts of acid rain, causing all plants to die, leading to the herbivores dying of starvation and then not long after, the carnivores also being wiped out because of starvation (Dinosaurs, 2014). Evidence for this theory grows more definite over time although it is still a continuing scientific

Dinosaurs ruled the earth for over 65 million years and thankfully for the human race, they became extinct. Ultimately, only a major catastrophe could completely wipe out an entire species, let alone an entity of dinosaurs and the debacle on the causes of dinosaur extinction have flooded the minds of paleontologists for centuries. Geologist and zoologist Stephen Jay Gould published “Sex, Drugs, Disasters, and the Extinction of Dinosaurs,” to compare scientific and speculative causes of dinosaur decimation. Personally, I found this passage very informational and enjoyed reading it. Gould provides three theories that capture the reader’s curiosity, allowing room for pondering in one’s mind.

Impact craters are geologic structures formed when a large meteorite, asteroid or comet smashes in to a planet or a satellite. Meteorites are small rocks in space that hit the earth's atmosphere at a high velocity. Throughout their history they have heavily bombarded all the inner bodies in our solar system. In this experiment we will use marbles as our meteorites, these will be free falling objects that will be used to copy an asteroid impact. The surfaces of the Moon, Mars and Mercury, where other geologic processes stopped millions of years ago, record this bombardment clearly. On the Earth, however, which has been

Scientists, however, have identified issues with this theory. The main detraction is that an impact of that size and magnitude would have left a circular impression on the planet. Most analysis of

The main mystery surrounding this impact event concerns the fact that the liquefied rock in the crater is significantly less than anticipated because of the impact. The size of the crater measures a depth of 570 feet with a diameter of 4,100 feet. The crater was created approximately fifty thousand years ago

However, this happened around 50,000 years ago, resulting in a crater 1 mile across, 2.4 miles in circumference and more than 700 feet deep. The impact of the meteor had energy of more than 20-million tons of TNT, and shook the southwestern plain for miles. The meteor left little evidence of its origin behind, it vaporized on impact with the earth. Moreover, erosion has done little to change the original crater.

The professor contradicts this point by saying that the meteorites not cause mass extinction but if they do it needs to have a residual crater and residual deposits, but in this time there is no evidence of crater found in this period.

In June of 1908, a fireball descended towards Earth leaving a fiery white trail in its path. It landed in Siberia but it wasn’t like any other asteroid. This one appeared to have exploded in mid air causing Hiroshima like effects. There is no evidence that it hit Earth, but there is a crater shaped lake about five miles from where the suspected spot it landed. The fire ball left thousands of trees on fire, seemingly blowing over millions. This force killed local people as well as animals and there is only one thing that we can conclude about it… it was an asteroid.

Dinosaur extinction: An analysis of events and theories that possibly led to the dinosaurs' demise.

Over 98% of all organisms that have lived on Earth are now extinct. A mass extinction event occurs when a large number of species die out within a small time frame (relative to the age of Earth). Mass extinctions are intensively studied for both cause and effect, as there is usually room for debate regarding catalysts that precede the extinction and the massive influx of new biological species that follows. There have been five major mass extinctions, dubbed the “Big Five,” that have wiped out at least 50% of the species living at those times. The most well known mass extinction of the Big Five, with the decimation of every species of non-avian dinosaur, is the Cretaceous-Paleogene

The biggest mystery surrounding the dinosaur is how did they die? For over 130 million years dinosaurs ruled the earth. Then 65 million years ago, at the end of the Cretaceous period, they died out.

Rapid climate change also ends up on the suspect list of possible dinosaur extinction events. During the latter part of the Cretaceous Period continents broke up causing volcanoes to erupt and fill the sky with gas and ash resulting in a drastic climate change (“Dinosaurs Climate Change and Biodiversity”). The shifting of continents changed the Earth’s landscape, altering weather patterns and overall climate (“Dinosaur Extinction Theories”). Also, over a long period of time, climate gradually changed. Ocean habits changed, temperatures grew much more extreme causing scorching summers and frigid winters (Norell, Dingus, and Gaffney). Radical temperature changes like these led to a green-house effect, making life for the dinosaurs a lot