filmov
tv
Earth's Early Atmosphere - GCSE Chemistry | kayscience.com
Показать описание
In this video you will learn all the science for this topic to get a grade 9 or A* in your science exams!
In this video, you will learn this model answer to achieve 100% in any exam question:
Earth formed 4.5 billion years ago. There was a lot of volcanic activity which meant the Earth was very hot, above 100 degrees Celsius. The volcanic activity released large amounts of carbon dioxide, water vapour and then small amounts of methane, nitrogen and ammonia. There was no oxygen. Scientists study rocky planets with lots of volcanic activity, such as Venus and Mars, showing they have lots of carbon dioxide and water vapour in their atmospheres too. They use this as evidence to conclude Earth's early atmosphere must have been like this as well.
In this video, you will learn this model answer to achieve 100% in any exam question:
Earth formed 4.5 billion years ago. There was a lot of volcanic activity which meant the Earth was very hot, above 100 degrees Celsius. The volcanic activity released large amounts of carbon dioxide, water vapour and then small amounts of methane, nitrogen and ammonia. There was no oxygen. Scientists study rocky planets with lots of volcanic activity, such as Venus and Mars, showing they have lots of carbon dioxide and water vapour in their atmospheres too. They use this as evidence to conclude Earth's early atmosphere must have been like this as well.
0:04:56
0:12:12
0:04:21
0:02:43
0:10:35
0:03:28
0:05:19
0:02:22
0:03:50
0:04:35
0:06:57
0:04:27
0:03:49
0:05:21
0:15:30
0:03:26
0:00:54
0:01:30
0:04:29
0:00:57
0:05:05
0:06:15
0:03:02
0:08:40