What must be present on a rock that undergoes frost wedging?(1 point)

Responses

holes around it
holes around it

a crack
a crack

sharp edges
sharp edges

round shape

a crack

how do u know?

Frost wedging occurs when water seeps into the cracks of a rock and freezes, expanding as it turns into ice. This expansion puts pressure on the rock, causing the crack to widen and potentially break apart. Therefore, for frost wedging to occur, there must be a crack present in the rock.

Which is the last stage of physical weathering in rocks? (1 point)

Responses

rock
rock

sand
sand

boulder
boulder

pebble

sand

how do u know

?

The last stage of physical weathering in rocks is the breakdown of rocks into smaller particles, such as sand. This process is known as disintegration, in which the rock is fragmented into smaller pieces. Over time, these smaller rock fragments can continue to be broken down into even smaller particles, such as sand.