Difference between revisions of "Cave"
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| − | A '''cave''' is an air- or water- filled void beneath the ground, where there is insufficient rock to prevent | + | A '''cave''' is an air- or water- filled void beneath the ground, where there is insufficient rock to prevent human access. |
They can be formed by | They can be formed by | ||
| − | * | + | *[[acid rain|acidic rainwater]], eroding away large of rocks such as [[limestone]]. |
*[[lava]] cooling and solidifying - either in bubbles, or when the crust of a lava flow solidifies, while the still-liquid lava underneath moves on. | *[[lava]] cooling and solidifying - either in bubbles, or when the crust of a lava flow solidifies, while the still-liquid lava underneath moves on. | ||
*[[waves]] - on coasts, waves can pound out caves in cliffs. | *[[waves]] - on coasts, waves can pound out caves in cliffs. | ||
| + | *[[erosion]] from wind or water | ||
| + | == External links == | ||
| + | *[http://www.answersingenesis.org/creation/v9/i4/caves.asp Limestone caves: A Result of Noah’s Flood?] | ||
| + | |||
| + | *[http://www.enchantedlearning.com/geography/glossary/ Glossary] | ||
[[Category:Geography]] | [[Category:Geography]] | ||
| + | [[Category:Caves]] | ||
Latest revision as of 15:43, December 4, 2008
A cave is an air- or water- filled void beneath the ground, where there is insufficient rock to prevent human access.
They can be formed by
- acidic rainwater, eroding away large of rocks such as limestone.
- lava cooling and solidifying - either in bubbles, or when the crust of a lava flow solidifies, while the still-liquid lava underneath moves on.
- waves - on coasts, waves can pound out caves in cliffs.
- erosion from wind or water