1. Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA)
The Precambrian period was also known as the Hadean and the reason why it was not solid yet was that the planets of the solar system were just starting to form and they were not even solid rocks yet they were just starting to form from dust particles.
2. What was this particular time period called?
This particular period was called the Hadean period.
3. Why is this time period not really considered a part of Earth’s geologic history?
The reason this specific period is not considered part of Earth’s Geological history is that the planet was barely formed it was just …show more content…
List and describe the six different periods into which the Paleozoic Era is divided
The first period in the Paleozoic Era was the Cambrian Period. During this period there was a sudden explosion of life on earth. The climate of the Cambrian Period was relatively cold at first, but then started to gradually warm up. Halfway through this period life started to go extinct.
The second period in the Paleozoic Era was the Ordovician Period. During this time, life underwater went through some tremendous changes. Also, a variety of marine life flourished also plants were beginning to appear on land also most of the world's land masses came together to form the super continent of Gondwana. Then Gondwana drifted south during this time, then finally settled in the Southern Hemisphere. The climate was mostly warm and humid and during this time sea levels were rising. At the end of the Ordovician period there was a mass extinction.
The third period in the Paleozoic Era was the Silurian Period. During this time sea levels were rising more and continental land masses were low. Also, having a warm climate caused ice glaciers to melt. Gondwana was still located in the southern hemisphere, but it then stretched to the equator. The seas in the Silurian Period were warm and shallow because of that, many life forms were able to be
The Precambrian period was also known as the Hadean and the reason why it was not solid yet was that the planets of the solar system were just starting to form and they were not even solid rocks yet they were just starting to form from dust particles.
2. What was this particular time period called?
This particular period was called the Hadean period.
3. Why is this time period not really considered a part of Earth’s geologic history?
The reason this specific period is not considered part of Earth’s Geological history is that the planet was barely formed it was just …show more content…
List and describe the six different periods into which the Paleozoic Era is divided
The first period in the Paleozoic Era was the Cambrian Period. During this period there was a sudden explosion of life on earth. The climate of the Cambrian Period was relatively cold at first, but then started to gradually warm up. Halfway through this period life started to go extinct.
The second period in the Paleozoic Era was the Ordovician Period. During this time, life underwater went through some tremendous changes. Also, a variety of marine life flourished also plants were beginning to appear on land also most of the world's land masses came together to form the super continent of Gondwana. Then Gondwana drifted south during this time, then finally settled in the Southern Hemisphere. The climate was mostly warm and humid and during this time sea levels were rising. At the end of the Ordovician period there was a mass extinction.
The third period in the Paleozoic Era was the Silurian Period. During this time sea levels were rising more and continental land masses were low. Also, having a warm climate caused ice glaciers to melt. Gondwana was still located in the southern hemisphere, but it then stretched to the equator. The seas in the Silurian Period were warm and shallow because of that, many life forms were able to be