Basic terms
The small pieces of rock that is weathered from a larger surface feature.
What is sediment?
Sediment, when it is dropped off in a new area.
What is deposition?
The breakdown of rock by wind, water or by chemical means in known as this.
What is weathering?
This is built across a river to prevent flooding.
What is a dam?
These types of boundaries move away from one another, causing deep ocean trenches.
What are diverging boundaries?
A surface feature that is both destructive and constructive, and usually accompanied by earthquakes and poisonous gas.
What is a volcano?
At the mouth of a river, these may form over time because of built up sediment.
What is a delta?
The movement of sediment from one place to another.
What is erosion?
These are built alongside a river to prevent flooding of low-lying areas. These failed unfortunately during Hurricane Katrina in 2005 in the city of New Orleans.
What are levees?
This is an area on earth that has frequent earthquakes and many volcanoes.
What is the Ring of Fire?
Broken pieces made of the Earth's crust or lithosphere. Another name for them is crustal plates. Continental crust is less dense, and oceanic crust is denser.
What are plate tectonics?
This type of tectonic plates are responsible for many of the tallest mountains in the world.
What are converging plates?
These can cause cracks in earth's crust, destroy mountains, and can change the surface features of the earth quickly.
What are earthquakes?
When a river is made deeper and wider for ships to pass through.
What is dredging?
The center layer of the earth. The middle of the planet.
What is the inner core?
A surface feature that is 2,000 feet in elevation or more.
What is a mountain?
Under water volcanoes can erupt, sending lava into the cold ocean waters. After time it will cool and create these.
What is an island?
This mountain, when it erupted in 1980, lost one entire side in the largest landslide ever recorded.
What is Mt. St. Helens?
When crops are planted in a circular fashion, protecting it from damaging winds.
What is contour plowing?
Weathering and Erosion are two destructive forces that take ____________ to change the surface of the earth.
What is, 'a long time'?
Another name for the various landforms on the planet.
What are surface features?
These build up earth's surface features.
What is a constructive process (force)?
Earthquakes, volcanoes, wind, water, ice, weathering and erosion are all types of this.
What are destructive forces?
This is used to build a beach back up. It will add more sand to an eroded beach but only will last for a few years.
What is beach nourishment?
True or False?
Human impact plays a role in how the surface features of our planet change.
What is true?