Question

1. choose the correct answer.

the two processes that form metamorphic rock are __ and __.

chemical metamorphism; mechanical metamorphism
contact metamorphism; regional metamorphism
local metamorphism; global metamorphism
site metamorphism; underground metamorphism

1. choose the correct answer.

which statement best describes the process of regional metamorphism?

large areas of rock are buried. the buried rock gets squeezed and heated until it changes into a new type of rock.
lava flows underground and melts rocks and other matter, which later hardens.
hot magma flows out of a volcano onto the already existing rocks on the surface. when it touches these rocks, it causes them to change properties.
small pebbles are created by weathering. over time, they are compacted into rock through pressure.

Explanation:

Question 7

To determine the two processes forming metamorphic rock, we recall geological knowledge: Metamorphic rocks form via contact (heat from magma) and regional (pressure/heat over large areas) metamorphism. Other options (chemical/mechanical, local/global, site/underground) are incorrect as they don't represent standard metamorphic processes.

Regional metamorphism involves large rock areas being buried, subjected to intense pressure and heat, causing them to metamorphose. The first option matches this. The second describes igneous rock formation (magma melting/ hardening), the third is contact metamorphism (magma heating surface rocks), and the fourth is sedimentary rock formation (weathering, compaction).

Answer:

B. contact metamorphism; regional metamorphism

Question 8