Constructive plate boundaries
1) Convection currents in the mantle move the plates
2) 2 plates of oceanic crust diverge/pull apart e.g. North American and Eurasian plates.
3)
The rising magma forces the ends of the plate to push up and buckle.
This creates tensional cracks on the underside of the plates.
4) Magma is squeezed into the gap between the two plates and is cooled by the ocean to form new, solidified rock/basalt.
5) Rising magma forces its way through the tensional cracks and forms sub-marine shield volcanoes on the ocean floor.
6)
With repeated eruptions over millions of years they can grow until
they break the surface of the ocean and become volcanic islands e.g.
Iceland.
Answer:
Explanation:
The asteroids are orbiting the Sun, each one traveling around the Sun fast enough for the orbits not to degrade
Meteoroids travel around the Sun in a variety of orbits and at various speeds.
Comets go around the Sun in a highly elliptical orbit.
<span>Northerners were more generally in favor of abolition, while Southerners were more so against abolition (for slavery).
I hope this helps!</span>
Answer:
It is all important
Explanation:
Mostly: Scientists can analyze changes in chemical concentration of atmospheric gases because this is how we live breath and are present with the moment