Geological Features Glossary

noun a barrier constructed to hold back water and raise its level, forming a reservoir

• The construction of the dam was completed ahead of schedule.
• Let's go check out the dam and take some photos.
• That dam is huge, dude!
• Her emotions were like a dam ready to burst at any moment.

noun a stretch of muddy land, typically by the sea or a river, that is uncovered at low tide

• The scientist conducted research on the biodiversity of the mud flat ecosystem.
• Let's go explore the mud flat and see if we can find any cool creatures.
• I got stuck in the mud flat while trying to drive through it.
• After the heavy rain, the backyard looked like a mud flat.

noun A long, narrow ditch typically used for military purposes such as defense or drainage.

• The soldiers dug a deep trench to protect themselves from enemy fire.
• I almost tripped and fell into that trench on the side of the road.
• That party was so boring, I felt like I was stuck in a social trench all night.
• She felt like she was in a deep emotional trench after the breakup.