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it gets larger because it absorves water

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Q: Why do cracks in a rock get larger water has frozen in them?
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Why do cracks in a rock get bigger if water freezes in them?

Frozen water molecules are larger and expand. In liquid form H2O is smaller

What is cryoseism?

Cryoseisms are caused by cracking actions in frozen rock or soil. Water enters the rock, freezes and expands The expansion builds up until the rock cracks

What is the effect of water freezes in the cracks in rock?

The rock cracks and weathers.

How does ice wedging cause mechanical weathering of racks?

If rain water seeps into cracks in rocks, and becomes frozen, the water turns to ice. As the ice expands it can force the cracks wider, even splitting the rock in two.

Why do cracks in a rock get larger because water has frozen in them?

Weathering is the process which breaks rocks into smaller bits. This is one type of weatheringPhysical weathering is a physical action which breaks up rocks : An example of this is called freeze-thaw weathering when water gets into tiny cracks in rocks. When the water freezes it expands, if this is repeated the crack grows and bits eventually break off.

How does melting water weather a rock?

the water freezes and then cracks the rock

The freezing and thawing action of water affects a rock by?

Water seeps into cracks in the rock, and when freezing occurs, the water expands, thus making the crack slightly larger. This process is called mechanical weathering.

What happens when water seeps into rocks and freezes?

It cracks the rock

What occurs when water seeps into the cracks of rocks and then freezes?

Water expands when it freezes, therefore it tends to cause the rocks to crack (or perhaps I should say, it causes existing cracks to get larger, leading to the disintegration of the rock).

Why does cement crack after salt is put on it when it is frozen?

When cement is frozen it shrinks. the salt adds heat and it expands. The cement is not used to the change and it expands to much and it cracks. just like when paper rips. =============================== I have a different mechanism to propose: -- Salt on the surface of the frozen rock melts the fine layer of ice on the rock, just as it does when salt is used on the roads or sidewalks. -- The liquid water seeps into microscopic cracks in the cement. -- When the water re-freezes, it expands, cracking the cement.

Which type of weathering occur by the formation of a new substance which acts to break up rock?

chemical weathering

When water frezzes and cracks the rock this is an example of?