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Igneous rock are formed by the cooling and crystallization of molten rock and are formed by the cooling of magma above earth's surface.
Let's look into the statements one by one:
Igneous rocks are formed only from material ejected during a volcanic eruption.
-This is not true because igneous rock can also be formed by the cooling down of magma inside a volcano or magma that was trapped in the crack of crust.
Igneous rocks are formed by the cooling and crystallization of molten rock.
-This is correct.
Igneous rocks are produced by the weathering and transport of pre-existing rocks.
-This is incorrect as igneous rock is formed by volcanism. The rock that are formed with the statement is sedimentary rock.
Igneous rocks are formed by the cooling of magma above earth's surface and lava below the surface.
-This is correct. Both intrusive and extrusive volcanic activity forms igneous rock after cooling down.
Igneous rocks are formed by recrystallization
-This is not true as recrystallization does not take place in the formation of the igneous rock. The rock formed by recrytillization is metamorphic rock.
Therefore,the igneous rock are formed by the cooling and crystallization of molten rock and are formed by the cooling of magma above earth's surface.
Hope it helps!
Answer:
Explanation:
From the internet, given options:
The solar wind produces the northern and southern lights.
The solar wind can cause the formation of new elements.
The solar wind causes temperature changes on Earth's surface.
The solar wind disrupts communication systems.
The solar wind distorts Earth's magnetic field.
Answer:
The solar wind produces the northern and southern lights.
The solar wind disrupts communication systems.
The solar wind distorts Earth's magnetic field.
Solar winds are very energetic particles moving at a velocity of about 905km/s from the sun. They are made up of extremely hot particles from the outer atmosphere the sun called the corona. These particles consists of electrons, protons, plasma flowing outward into the solar space from the sun.
Due to their nature, they are know to produce the northern and southern light known as aurora when they come in contact with the earth atmosphere.
Solar winds disrupts radiowaves which are known as the facilitators of communication systems.
They also disrupt the magnetic field of the earth. These jets streams can interact with the earth magnetic field.
Answer:
it would be B
Explanation:
a terrestrial planet (earth, and any other inner planet) is a rocky planet
