Answer the following. Choose the correct letter of the correct answer.
1. The strata of a sedimentary rock that shows that sediments are deposited horizontally follows A principle of relative dating known as
a. Unconformities.
b. Law of Superimposition.
c. Principle of Original Horizontality.
d. Principle of Cross-cutting Relationship. 2. In the division of the geologic time scale, which represents the longest amount of time?
a. Epoch
b. Era
c. Eon
d. Period
3. Fossils are commonly found in
a. clastic sedimentary rock.
b. chemical sedimentary rock.
c. foliated metamorphic rocks.
d. non-foliated metamorphic rock.
4. It is the era with the shortest amount of time.
a. Cenozoic
b. Mesozoic
c. Paleozoic
d. Pre-Cambrian
5. The principle of Original Horizontality states that
a. igneous rocks form essentially horizontal layers.
b. sediments are deposited as essentially horizontal layers.
c. most rocks in the Earth’s crust are layered horizontally.
d. metamorphic gradients are essentially horizontal before deformation. ​