Exploring Natural Bridge Caverns
A Journey into Natural Bridge Caverns
Have you ever wondered what secrets lie beneath our feet? Deep under the ground, hidden from the sun, are amazing places called caves. One of the most spectacular is Natural Bridge Caverns in Texas. Let's explore this underground wonder!
What is a Cave?
A cave is a natural opening in the ground that is big enough for someone to enter. Caves form over many, many years. Rainwater seeps into the ground. This water mixes with carbon dioxide from the air and soil, creating a weak acid. This acid slowly dissolves the limestone rock that makes up much of the Texas Hill Country, creating cracks and tunnels. Over time, these tunnels grow bigger and bigger, forming the caverns we can explore today.
Stalactites and Stalagmites: Drip, Drip, Drop
Inside caves, you might see fascinating formations called stalactites and stalagmites.
- Cave:
- A natural opening in the ground.
- Stalactite:
- A formation that hangs from the ceiling of a cave.
- Stalagmite:
- A formation that grows up from the ground of a cave.
- Limestone:
- A type of rock that is easily dissolved by acid.
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Preview questions from this passageShowHide
- 1What is a cave?
- 2How do caves form?
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About this informational passage for Upper Elementary
âExploring Natural Bridge Cavernsâ is a informational reading passage about Cave Formations, written for Upper Elementary. It takes about 3 minutes to read (402 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.