Ⅰ.
solid Earth

1.
Changes in land rights
01 The process of establishing plate tectonics
02 Changes in continental distribution
03 Magmatic activity and igneous rocks

2.
History of the Earth
04 Sedimentary Structure and Geological Structure
05 Age of the stratum
06 Geological Era Environment and Life

Ⅱ.
atmosphere and ocean

1.
Changes in the atmosphere and oceans
07 Pressure and Weather Changes
08 Typhoon and major weather conditions in our country
09 Properties of seawater

2.
Interaction between the atmosphere and the ocean
10 Ocean circulation
11 Interaction between the atmosphere and the ocean
12 Global Climate Change

Ⅲ.
universe

1.
Stars and exoplanetary systems
13 Characteristics of stars and H-R diagram
14 Stellar Evolution and Energy Sources
15 Exploring Exoplanetary Systems and Extraterrestrial Life

2.
External galaxies and the expansion of the universe
16 External galaxies
17 Big Bang Cosmology

Special materials for the College Scholastic Ability Test (CSAT)

1.
O2 Earth Science I is a college entrance exam book that thoroughly analyzes the 15th revision of the college entrance exam and the previous exam questions from the Korea Institute of Curriculum and Evaluation.
2.
The core content for school grades and the CSAT is organized in a simple and concise manner using concepts and diagrams so that it can be understood at a glance.

3.
It consists of various problems using frequently appearing college entrance exam materials.