This is a powerpoint presentation that is about one of the Senior High School Core Subject: Earth and Life Science. It is composed of the definition, characteristics and processes about rocks.
2. WHAT IS A ROCK?
Any naturally occurring solid mass or consolidated
aggregate of minerals or mineraloid matter.
It is not a single, uniform crystal mineral thus it is
composed of different minerals
3. FEATURES OF A ROCK:
Texture (Shape and Arrangement, not the feeling of the
rock’s surface)
Structure
Grain Size (size of individual mineral crystals)
Chemical Composition
Color
Strength
Hardness
4. WHAT IS A BEDROCK?
A deposit of solid rock that is typically buried beneath
soil and other broken or unconsolidated material
5. HOW WERE ROCKS FORMED?
Rocks are formed when they successfully complete the
process of rock-forming called lithification
Lithification = sediments compacted under pressure
expel connate fluids (water and minerals) and became
solidified as rocks
6. PROCESS OF LITHIFICATION:
Compaction (a sediment loses its porosity due to effects
from loading)
Cementation (ions of groundwater chemically
precipitating to form new crystalline material)
7. HOMEWORK:
Research the definition and characteristics of the types
of rocks: (Igneous, Metamorphic and Sedimentary)
Give at least two examples of rocks under that category
or type