Grade 12

មេរៀនភាសាខ្មែរ

Chapter 1 The Planet Earth

Lesson 1: Minerals

Lesson 2: Rocks

Lesson 3: Weathering and Soil Formation

Lesson 4: Erosion and Deposition

Chapter 2 The Universe

Lesson 1: The Earth

Lesson 2: The Positions of Earth and Sun

Lesson 3: Universal Gravity and Planetary Motion

Lesson 4: The Earth's Moon

Lesson 5: A Special Star: Our Sun

Lesson 6: Planets In The Solar System

Lesson 7: Small Bodies In The Solar System and Oort Clouds

Lesson 8: A Solar System Is Born

Chapter 3 Stars Galaxies and Universe

Lesson 1: Universe Exploration

Lesson 2: Fixed Stars

Lesson 3: Stars Systems and Galaxies

Lesson 4: The Expansion of Universe

Chapter 4 Environmental Studies

Lesson 1: Energy and Mineral Resources (Video Kh-ES & ES)

Lesson 2: Air Pollution (Video)

Lesson 3: Global Warming

Lesson 4: Acid Rain (Video)

Lesson 5: Ozone Hole

Lesson 6: Soil Contamination

Lesson 7: Water Pollution

Lesson 8: Solid, Toxic, and Hazardous Waste

Lesson 9: Natural resource management

Lesson 10: International Environmental laws

Lesson 11: Sustainable development