Proterozoic Eon: Eukaryotes to Multicellular Life (2500 to 541 million years ago)
In the Proterozoic Eon, key highlights are: ozone layer thickened, an oxygen crisis, Snowball Earth and eukaryotes and multicellular organisms evolved.
Geology
How the Rock Cycle Recycles Earth’s Crust
If you could speed up time, you would see rocks cycling from within the planet. Like a well-oiled machine, rocks are igneous, sedimentary and metamorphic.
Chemical Weathering: Hydrolysis, Oxidation and Acidic Reactions
Chemical weathering is the process of transforming a rock’s composition through chemical reactions (by dissolving or converting them into other minerals)
Eurasian Plate: Tectonic Boundary and Movement
Sandwiched between the North American & African Plates, the Eurasian Plate consists of parts of Europe, Russia, Asia as well as the Atlantic & Arctic Ocean.
The Mesozoic Era: The Age of Reptiles, Dinosaurs and Conifers
The Mesozoic Era had a lot of “firsts”. For example, it had the first birds, first mammals, first dinosaurs and first flowering plants on Earth.
What Are the 3 Types of Rocks?
Earth is covered with these 3 types of rocks are: (1) sedimentary rocks (2) metamorphic rocks and (3) igneous rocks. How they are different from each other?
Earth Crust: Oceanic Crust vs Continental Crust
Earth’s crust is all around us. It’s the layer we live on. But did you know that Earth’s crust is composed of oceanic and continental and oceanic crust?
Plate Tectonic Types: Divergent, Convergent and Transform Plates
Plate boundaries interact with each other in 3 primary ways. The types of plate tectonic boundares are divergent, convergent and transform (conservative).
What’s the Difference Between Lava and Magma?
Magma is liquid rock with dissolved gas at the interior of Earth. When magma reaches the surface, it’s lava. The difference for lava vs magma is location.
Inside Earth: The Crust, Mantle and Core
All planets have layers. Inside Earth, we have a crust, core and mantle. Imagine a team of drillers who set out to drill a hole to the other side of Earth.
What is Earth’s Geological Time Scale?
Earth’s geological time scale is almost unimaginable to us. This is because humans lifespans are so short in comparison (in hours, days, months and years).
