Answer:
Like most Earth materials, rocks are created and destroyed in cycles. The rock cycle is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. All igneous rocks start out as melted rock, (magma) and then crystallize, or freeze.
If 20.0 grams of ice takes about 6680j...then 40.0 grams of ice would take ___ .
Astronauts experience weightlessness which is the apparent loss of weight of an object that is falling in gravitational field
Energy, in a form of gamma rays, is <span>released when an electron and its antiparticle (positron) annihilate each other. </span>