Ocean Basics
This is the largest ocean on Earth
What is the Pacific Ocean
This mammal is known for its songs and lives in all major oceans
What is a whale
This ocean is bordered by Europe, Africa, and the Americas
What is the Atlantic Ocean
This force causes tides along with the Moon
What is gravity
This type of pollution comes from plastic bags, bottles, and debris
What is marine litter (or plastic pollution)
Oceans cover about this percentage of Earth’s surface.
What is 71%
This cold-blooded predator is often called the apex predator of the sea
What is a shark
The equator passes through this ocean
What is the Indian Ocean
The study of the ocean is known as this.
What is oceanography
Overfishing can lead to this, when species population drops dangerously low
What is depletion
The salt in seawater primarily comes from these two elements.
What are sodium and chloride
These invertebrates use jet propulsion and ink as defense
What are squids
This narrow body of water connects the Red Sea to the Arabian Sea.
What is the Gulf of Aden
This instrument is used to measure ocean depth using sound
What is sonar
This global issue causes ocean temperatures and sea levels to rise
What is climate change
This term describes the movement of water from surface to deep ocean and back.
What is thermohaline circulation
This structure, made by coral polyps, supports one of the most diverse ecosystems on Earth.
What is a coral reef
This current, off the U.S. East Coast, influences weather and warms Western Europe.
What is the Gulf Stream
Upwelling brings this nutrient-rich water to the surface
What is deep water
This phenomenon causes coral bleaching when waters get too warm
What is ocean acidification
The deepest part of the ocean is this trench
What is the Mariana Trench
This zone, 200 meters to 1,000 meters deep, is also called the twilight zone
What is the mesopelagic zone
This ocean is completely in the Southern Hemisphere.
What is the Southern Ocean
This process removes salt from seawater to make it drinkable
What is desalination
This zone in the Gulf of Mexico is known for its lack of oxygen due to pollution
What is the Dead Zone