Exploring Oceans and Seas Quiz

What is the term used to describe the large bodies of salt water that cover most of Earth's surface?

• Rivers

• Lakes

• Oceans

• Ponds

How many major oceans are there on Earth?

• 3

• 4

• 5

• 6

What percentage of Earth's surface is covered by oceans and seas?

• About 51%

• About 61%

• About 71%

• About 81%

Which of the following is the largest ocean on Earth?

• Atlantic Ocean

• Indian Ocean

• Arctic Ocean

• Pacific Ocean

What is the term for the regular rise and fall of sea levels caused by the gravitational pull of the Moon and the Sun?

• Waves

• Tides

• Currents

• Tsunamis

What causes ocean waves to form on the surface of the sea?

• The rotation of the Earth

• The gravitational pull of the Moon

• Wind blowing across the water surface

• Underwater volcanic eruptions

What is the name of the deepest point in the world's oceans, located in the Pacific Ocean?

• Java Trench

• Puerto Rico Trench

• Mariana Trench

• Tonga Trench

Which ocean is located at the northernmost part of Earth and is mostly covered by ice?

• Southern Ocean

• Arctic Ocean

• Atlantic Ocean

• Indian Ocean

What is the average salinity of ocean water?

• About 15 grams of salt per liter

• About 25 grams of salt per liter

• About 35 grams of salt per liter

• About 45 grams of salt per liter

What is the term for large-scale movements of ocean water that flow in specific directions, influenced by wind and Earth's rotation?

• Tides

• Ocean currents

• Tsunamis

• Waves