Sedimentary Rocks
Question of the day: What are sedimentary rocks ?
Answer: Sedimentary rocks are formed on or near the earth's surface unlike igneous and metamorphic rocks. They are mostly made out of grains such as pebbles, sand, and gravel. And they typically contain organisms and fossils !
Learning objectives
Students will be able to identify sedimentary rocks
Students will be able to understand how sedimentary rocks are formed
Students will be able to understand how the formation of sedimentary rocks connects to the rock cycle
Sedimentary lesson / guide
Let's take a look at what the different types of weathering look like.
Chemical
Notice how smooth the sides of the rocks are. The rainwater trickles down the rock and over time it made the rock look smooth on the sides.
Biological
This tree created cracks within the rock in order to burrow its roots into the ground underneath the rock.
Physical
The rock looks as if someone cut the rock with a knife. In actuality, this is one of the physical processes called freeze-thaw. The water seeped into the rocks cracks, froze (expanded), and split the rock
Out the door quiz
Answer key
1) B- weathering and erosion
2) A- Stratification
3) A- True
4) A- True
5) B- False