Ocean Geography and Features

The video explores various features of the sea floor, including tectonic plate boundaries, ocean basins, mid-ocean ridges, volcanic islands, sea mounts, abyssal plains, ocean trenches, and continental margins. It highlights the depth of the oceans, the challenges of exploration, and the formation of submarine volcanoes and volcanic islands. The video emphasizes the volcanic nature of many sea floor features and the significant depth of oceanic trenches compared to land features.

What is a common location for tectonic plate boundaries?

• In forests

• On mountain tops

• On the sea floor

• In deserts

What is an ocean basin?

• A type of volcanic island

• A high mountain range

• A deep sea trench

• A low area where water collects

What are mid-ocean ridges?

• Flat areas on the ocean floor

• Chains of underwater volcanic mountains

• Continental shelves

• Deep sea trenches

What percentage of the ocean floor is covered by the abyssal plain?

• 50%

• 30%

• 70%

• 90%

What is a continental shelf?

• A submerged part of a continent

• A deep sea trench

• A mid-ocean ridge

• A volcanic island

How deep can sunlight penetrate the ocean?

• Up to 1000 feet

• Only a few hundred feet

• Up to 5000 feet

• Throughout the entire ocean

What is the longest mountain chain on Earth?

• The Mid-Ocean Ridge

• The Himalayas

• The Andes

• The Rockies

What is a submarine volcano?

• A type of ocean trench

• A dormant volcano

• A volcano that erupts underwater

• A volcano that erupts on land

How does a volcanic island form?

• By tectonic plate collision

• By accumulation of lava from underwater eruptions

• By sediment deposition

• By erosion of a mountain

Which is taller, Mauna Kea or Mount Everest, when measured from base to peak?

• Neither, both are underwater

• They are the same height

• Mount Everest

• Mauna Kea