Answer: A mafic lava cooling at earth's surface
Explanation: Basalt is the mafic igneous rock formed by the cooling of the magnesium rich and iron rich lava exposed area rapidly.It is mostly crushed for the purpose of using in construction projects. So,when mafic lava cools down on the surface of the Earth it forms basalt or basaltic lava . It is usually found in the form of columns on the Earth's surface.
The layer of the earth's atmosphere from the surface to approximately 2000 feet MSL where friction influences are large is called the ionosphere which is the part of the thermosphere.
<h3>What is the atmosphere?</h3>
The atmosphere is a combination of gases that are life supportive in nature and have a sufficient proportion of each gas. The gases play different roles which make life possible on earth.
The ionosphere, a component of the thermosphere, is the layer of the earth's atmosphere between the surface and about 2000 feet MSL where friction influences are significant.
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Answer:
Something to do with the increase of CO2 in the atmosphere, caused by machinery like car fumes.
Explanation:
Answer:
Explained below
Explanation:
The magnitude of an earthquake may likely vary with how soft the crust/sediments of the area are.
Now, the seismic waves of an earthquake usually when travelling through the ground move much faster through hard Rock than through soft soil.
Now, when these waves make a transition from the hard to the soft earth, this leads to a bigger amplitude and thus leads to a stronger earthquake shaking.
Answer:
D. Short-period comets come from some location near the ecliptic plane of the Solar System, and long-period comets come from farther away, with random directions in a spherical distribution around the Sun.
Explanation:
- A comet is an icy rocky and small system body that passe near the sun get warmed and begins to release gases and is due to the effects of the solar radiation and have a highly eccentric elliptical orbit.
- The long-period comets are those that have more than 200 yeas to complete and originate from the Oort Cloud.
- And the short periods of comets are those that have less than 200 days of orbital periods as they have a low inclination.
- The periods are less than 20 years and they are subject to a gravitational disturbance around larger bodies.