The ratio of brightness is 16:1
Magnitude in astronomy is defined as the measured value as of size, brightness or energy or rather the relative brightness/dimness of objects as seen from earth. The higher the magnitude the lower the comparative brightness of the star or planetary body.
The answer is C “volcanic activity was more common in the past than it is today
It would take metamorphism,where sedimentary rock undergoes heat and pressure and turn into metamorphic rocks. The rock would then undergoes melting when it enters the mantle,it would thenturn into magma. When the magma rise up and is exposed to air due to volcanic eruption, or is cooled down below the crust it turns into igneous rock.
in short, the process would be: metamorphism>melting>solidification(lava>extrusive igneous rock)/crystallization(magma>intrusive igneous rock)
Answer:
Cold-air funnel clouds
Explanation:
Although cold-air funnels rarely make ground contact, surface-level vortices sometimes become strong enough for condensation cloud to "touch down" briefly, becoming visible as weak tornadoes or waterspouts.