River Delta: How It Forms
Streams carrying too much sediment clogs the entrance into the basin. As sediments dump in, water flow decelerates and widens the entrance forming a delta.
Articles
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.
5 Comet Facts: Dirty Snowballs of the Solar System
Comets are balls of frozen gases mixed with pieces of rocks, water and ice. There are only a hundred or so named comets and a bit over 3500 known comets.
Earth’s Atmosphere Composition: Nitrogen, Oxygen, Argon and CO2
From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO2 and trace gases. Water vapor is excluded from this total.
![What Are the 4 Layers of the Atmosphere? [Infographic]](https://earthhow.com/wp-content/uploads/2017/07/Earth-Atmosphere-Layers-425x319.png)
What Are the 4 Layers of the Atmosphere? [Infographic]
There are 4 primary layers of the atmosphere on Earth: troposphere, stratosphere, mesosphere and thermosphere. The ionosphere and exosphere are above those.
What Are the 8 Major Phases of the Moon?
At all times the sun illuminates half of the moon. Depending on your point of view, this is what causes the various phases of the moon.
How Far Is the Moon?
The moon is approximately 238,855 miles (384,400 km) away from the Earth. It’s such a big gap that you can almost fit all the 7 other planets in between.
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).
Earth Rotation: The Day-Night Boundary
As the Earth spins, the sun always shines on one side which gives it sunlight. When you’re facing the sun, it’s daytime. But when you’re not, it’s night.
![15 Facts About Mars: The Remarkable Red Planet [Infographic]](https://earthhow.com/wp-content/uploads/2018/06/Mars-425x319.png)
15 Facts About Mars: The Remarkable Red Planet [Infographic]
In terms of space exploration, Mars has been the greatest frontier for discovery. From its red color to marsquakes, here are 15 remarkable facts about Mars.
What Is the Mesosphere?
Highlights of the mesosphere include: (1) Air is very thin (2) It’s the coldest region of the atmosphere close to -100°C and (3) It’s where meteors burn up.
The Major Ocean Currents of the World
Ocean currents are like giant conveyor belts moving huge amounts of water all the time. Wind, temperature and salt gradients all influences ocean currents.