Chapter 12: History of the Earth

Question 1

Which type of rocks form from existing rocks that have been heated and squeezed?
igneous
detrital
sedimentary
metamorphic

Answer 1

metamorphic

Question 2

What type of igneous rock forms on Earth’s surface?
extrusive
intrusive
foliated
nonfoliated

Answer 2

extrusive

Question 3

What type of rocks can form from the evaporation of a solution?
detrital sedimentary rocks
chemical sedimentary rocks
foliated metamorphic rocks
extrusive igneous rocks

Answer 3

chemical sedimentary rocks