Ocean and Water Cycle Concepts

The video tutorial explores Earth's hydrosphere, one of the four spheres, focusing on water's role and distribution. It covers the water cycle, driven by the sun and Earth's gravity, and explains how water moves through different spheres. The distribution of water is discussed, highlighting that 97% is salt water and only 3% is fresh water, mostly frozen. The video also covers rivers, watersheds, lakes, ponds, and groundwater, explaining their formation and significance. Finally, it delves into ocean characteristics, including salinity, density, and temperature variations, with a focus on the Mariana Trench.

Which of the following is NOT one of the Earth's spheres?

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

What is the primary force that causes water to evaporate in the water cycle?

• Moon

• Sun

• Wind

• Gravity

What percentage of Earth's water is freshwater?

• 50%

• 97%

• 10%

• 3%

Which of the following is the largest river in the United States?

• Missouri River

• Colorado River

• Mississippi River

• Ohio River

How do lakes differ from ponds?

• Ponds are deeper than lakes

• Ponds have more plant life

• Lakes have rivers flowing in and out

• Lakes are smaller than ponds

What is the largest ocean on Earth?

• Arctic Ocean

• Pacific Ocean

• Indian Ocean

• Atlantic Ocean

What is the deepest ocean trench recorded?

• Puerto Rico Trench

• Java Trench

• Tonga Trench

• Mariana Trench

How does the salinity of ocean water change with depth?

• It decreases

• It remains constant

• It increases

• It fluctuates randomly

What happens to the temperature of ocean water as you move away from the surface?

• It increases

• It decreases

• It remains the same

• It fluctuates

Why is the pressure lower at the surface of the ocean?

• Because the water is colder

• Because the water is warmer

• Because the water is more saline

• Because the water is less dense