Weathering/Erosion
What is weathering?
Breaking rocks into smaller pieces
Where are deep-sea trenches found?
At the bottom of the ocean.
What type of mountain forms from erupting lava?
Volcanic Mountains
What is a deep-sea trench?
A very deep valley on the ocean floor
What causes an earthquake?
Plates slipping against the fault line
What is erosion?
Moving rocks and soil to a new place
How do deep-sea trenches form?
One tectonic plate slides under another
What type forms when plates push together?
fold mountains
How do deep-sea trenches form?
When a plate slides under another (subduction)
What is magma?
melted rock below earth's surface.
Name a force that causes erosion?
Wind, water, or ice
What is a seamount?
An underwater mountain
What type forms when land breaks and moves along faults?
Fault Block Mountains
What are hydrothermal vents?
Openings on the ocean floor that release hot water and minerals
Where are most volcanoes found?
Along plate boundaries
What are sediments?
Small pieces of broken rock
How are most seamounts formed?
By underwater volcanoes
What is a dome?
Land pushed up without breaking
Why is the water from hydrothermal vents so hot?
It is heated by magma beneath Earth’s surface
What giant wave can be caused by an underwater earthquake?
Tsunami
How do weathering and erosion change mountains over time?
They wear them down
What can happen if a seamount keeps growing?
It can become an island
What natural process helps break down mountains over time?
Weathering & Erosion
How hot does a hydrothermal vent get and what types of animals live near them?
750 degres: tube worms, blind shrimp, football sized clams
What is the epicenter of an earthquake?
The point on Earth’s surface directly above where the earthquake begins