How does time affect the physical weathering of a rock?(1 point)
Responses
The longer the rock has been exposed, the more it has weathered.
The longer the rock has been exposed, the more it has weathered.
Time does not affect physical weathering, only chemical weathering.
Time does not affect physical weathering, only chemical weathering.
Over time, the rock will become flat, slowing the rate of physical w
eathering.
Over time, the rock will become flat, slowing the rate of physical weathering.
Which of the following indicates that different rocks in the same area might weather differently? Select the two correct answers. (1 point)
Responses
a smooth plain
a smooth plain
the rock atop a newly formed mountain
the rock atop a newly formed mountain
cliffs with ridges
cliffs with ridges
rock pillars in the middle of grassy plains
the rock atop a newly formed mountain
cliffs with ridges
Select the correct answer from the list.(1 point)
In frost wedging, a crack expands when water
. When the water
it can seep into new fissures in the rock.
freezes; expands
Which is an example of physical weathering?(1 point)
Responses
bits of iron in rock rusting when exposed to oxygen and water
bits of iron in rock rusting when exposed to oxygen and water
oxygen interacting with minerals in rock
oxygen interacting with minerals in rock
rock breaking apart when it falls from a cliff
rock breaking apart when it falls from a cliff
acid rain breaking down compounds in rock statues
rock breaking apart when it falls from a cliff
Which is an example of chemical weathering?(1 point)
Responses
burrowing animals digging a home in rock
burrowing animals digging a home in rock
decomposition of rock when exposed to acidic plants
decomposition of rock when exposed to acidic plants
rock breaking apart during a rock slide
rock breaking apart during a rock slide
a crack in rock growing larger as water freezes in it
a crack in rock growing larger as water freezes in it