Exploring the Atlantic Ocean

What is seafloor spreading a key piece of evidence for?

• The theory of plate tectonics

• The theory of evolution

• The theory of relativity

• The theory of gravity

What did the study of the Mid-Atlantic Ridge help scientists consider?

• The possibility of seafloor spreading

• The height of mountains

• The depth of the ocean

• The speed of ocean currents

What makes the vent water look like dark smoke?

• The presence of fish

• The dissolved minerals forming tiny particles

• The reflection of sunlight

• The presence of algae

What happens if a seamount grows high enough to rise above the ocean's surface?

• It becomes a coral reef

• It becomes an island

• It becomes a trench

• It becomes a wave

What is a common location for many seamounts to form?

• Near beaches

• Along mid-ocean ridges or subduction zones

• In freshwater lakes

• Near the Arctic Circle

How many seamounts over 3,000 feet tall are estimated to exist in the world's oceans?

• 10,000

• 50,000

• 100,000

• 200,000

Why is studying seamounts a challenge?

• They are too small

• They are far below the ocean's surface

• They are too close to the shore

• They are always moving

What is the significance of the diagram?

• It represents a historical event.

• It shows a scientific process.

• It illustrates a mathematical concept.

• It depicts a fictional story.

What type of organisms are often found living on and around seamounts?

• Penguins

• Deep-sea corals and sponges

• Dolphins

• Whales

Where is the Mariana Trench located?

• Atlantic Ocean

• Indian Ocean

• Pacific Ocean

• Arctic Ocean