🌊 Ocean Features
What is the flat, shallow part of the ocean before it gets deep?
Continental Shelf
What is the highest type of landform?
Mountain
The ocean floor is completely flat.
False – it has mountains, valleys, and ridges.
Which land feature could also be an island if it is surrounded by water?
A mountain! If the peak rises above water, it forms an island
Name three ways ocean and land features are similar
Both have mountains, valleys, and plains
What is the deepest part of the ocean called?
Trench
A deep valley with steep sides, often carved by a river, is called a _______.
Canyon
A delta is created where a river meets an ocean and drops off sediment.
True
What ocean feature is like a “waterfall” at the edge of a continent?
Continental Slope – where the ocean suddenly drops deep
What landform is most similar to a trench?
A canyon – both are deep cuts into the surface.
he underwater mountain range in the middle of the ocean is called the ________.
Mid-Ocean Ridge
This landform is a raised, flat area that is higher than the land around it.
Plateau
A trench is formed by underwater volcanic eruptions.
False – trenches are formed by plate movements.
A volcanic island is formed from what natural process?
Underwater volcanic eruptions building up land over time.
If a river deposits a lot of sediment over time, what new landform will it create?
A delta
What is an underwater mountain that does not reach the surface
A seamount
What do we call a large, flat grassy area with few trees?
Plain
The Grand Canyon was carved by the Colorado River over millions of years.
True
What do we call the process of wind or water wearing down rocks and moving sediment?
Erosion
Explain why mid-ocean ridges exist.
They form from magma rising between tectonic plates
Which ocean feature is a wide, flat area at the bottom of the ocean?
Abyssal Plain
Name two ways landforms can be created.
Earthquakes, erosion, volcanoes, or deposition
Mountains can only be found on land, not in the ocean.
False – seamounts and mid-ocean ridges are underwater mountains!
What is the name of the largest mountain in the world if measured from base to peak?
Mauna Kea in Hawaii – much of it is underwater!
You are a scientist exploring the ocean. You just found a long chain of underwater mountains! What have you likely discovered?
A mid-ocean ridge!