Transcript Ch. 10 Sec. 2

Welcome to Science: WED, 9/18
• Have a seat and get ready to go outside for
the weathering tour.
• Remember to have your note book so that you
can take notes during the tour.
Science Starter: Thursday, 12/4
• To the side is a
diagram showing the
relative stability of
common minerals.
Which mineral
would be the best at
withstanding the
destructive forces of
weathering?
Today’s Schedule
• Wrap-up Weathering Tour/Prepare for
Weathering Tour Quiz
• Your Choice
• 1. Finish Key Terms Section 1 (Due at the end
of class)
• 2. Finish Skittles Lab (Part 2. Questions on the
Online Classroom) Due Tomorrow
• 3. Ch. 10 Section 2 Questions (Textbook
needed)
Ch. 10 Section 2 Questions
• 1. Does all weathering happen at the same rate?
• 2. What are the three most important factors which affect the rate at
which rock’s weather?
• 3. What is differential weathering?
• 4. A spectacular example of differential weathering is shown in Figure
13. What is this landform called?
• 5. What is the relationship between surface area and the rate of
weathering for a rock?
• 6. Where is a bike likely to get chemically weathered at a greater rate,
New Mexico or Florida? Why?
• 7. Why do rocks exposed to higher elevations weather more quickly?
• 8. Describe how gravity increases the rate of weathering?
• Do all rocks weather at the same rate?
• No.
• Climate, elevation, and surface area are factors
that affect how quickly rock weathers.
The Shape of Weathering
• How does the surface area of a rock affects its rate
of weathering?
• The more surface area exposed equals faster
weathering.
Weathering and Climate
• Warm, humid climates = more chemical
weathering
• Cold, wet climates = more mechanical weathering
Weathering
and
Climate
Weathering and Elevation
• Higher elevation = more weathering.
• Extreme weather at higher elevations creates
more weathering.
• Gravity pulls loose rock down the slopes and
increases the rate at which the mountain
weathers.