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What are the Factors that Affect
the Rate of Weathering?
Does sugar dissolve faster in ice
coffee or hot coffee?
Climate
Variable temperatures
(above freezing to below
freezing) and Wet
• Physical/ mechanical
weathering
• As temps change btn below
and above freezing ice
wedging can occur
Warm and Wet (Moist)
• Warm water will dissolve
minerals faster than cool
water.
Cleopatra’s Needle
Egypt
NYC –
central park
Rock Resistance
• Which layer was the
least resistant to
weathering?
• Which was most
resistant?
• Harder minerals and
rocks are more resistant
and the rocks will
weather less.
• Softer minerals and
rocks weather faster
Surface Area
• Are your hands warmer
in mittens or gloves?
• Hands are warmer in
mittens because less
surface area is exposed
to the air.
• Ms V has a nice cup of
yummy coffee, she wants to
add sugar before drinking it,
but she NEEDS to drink it
ASAP!!
• Should she use a sugar cube
or spoon of granulated
sugar?
Surface Area
• As particle size
decreases surface area
increases.
• SMALLER PARTICLES
DISSOLVE FASTER
• As surface area
increases the rate of
weathering increases
Pollution
• Pollution increases the
amounts of acids in the
air and this will increase
the amount of chemical
weathering.