8th Grade Science

1. lesson 1

1.1. Absolute Age

1.2. Strata

1.2.1. Sediment

1.2.1.1. Relative Age Dating

1.3. Superposition

1.3.1. Uniformitarianism

1.4. Original Horizontality

1.4.1. Relative Age

1.5. Lateral Continuity

1.5.1. Mass Extinctions

1.6. Inclusions

1.6.1. The fossil record

1.6.2. Cross Cutting Relationships

2. Lesson 2

2.1. Uncomformities

2.1.1. Key bed

2.2. Angular uncomfority

2.2.1. Correalation

2.3. Disconformity

2.3.1. Index fossils

2.4. Noncomfority

2.4.1. Geologic time scale