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Ocean review

Goes over properties of water, ocean composition, and ocean currents.

What are ocean currents? Cohesive streams of seawater that are caused by water movement and forces such as the wind, temperature, the moons gravitation, earths rotation, water density and salinity differences/changes.
How many types of ocean currents are there and what are they called? Two, surface and deep water currents. Also known as surface circulation and thermohaline currents.
What does each type of current do? Deep water: sweeps along the deep sea floor. Surface: stirs the thin upper layer of the sea.
How many gyres are located in the world, and where are they located? Five main gyres, although there are smaller ones located, too. Two are located in the Pacific Ocean, two in the Atlantic Ocean, and one in the Indian Ocean.
What are gyres made up of, and how do they work? Gyres are made up of ocean currents, and are driven by wind and gravity, also steered into their path by continents.
What is salinity? Salinity is a measure of the mass of dissolved solids in a mass of water.
What is the difference between seawater and brackish water? Seawater is from and ocean or sea that has an average salinity of 35ppt, while brackish water is just freshwater mixed with seawater.
In which states of matter can water exist on nature on earth? Liquid, gas, and solid.
What causes water's unique properties? Water is the only liquid that can be in 3 states in nature. (Gas, liquid, and solid)
How does the ice make it possible for organisms to live in the lake in the winter? The ice on top insulates the pond water underneath, which is not frozen, making suitable living conditions for organisms to live in.
What happens when you add sugar to water? It will dissolve in the water. This is why water is sometimes called the universal solvent.
Why do water molecules attract to each other? Water molecules will attract due to either cohesion and/or adhesion.
What is polarity? A condition where the opposite ends of a molecule have slightly opposite charges, but the overall charge of the molecule is neutral.
Which ocean is the largest and which ocean is the deepest? The Pacific Ocean is the largest ocean, as well as the deepest.
What are four criteria scientists use while classifying ocean zones? 1. Amount of sunlight 2. Salinity 3. Density 4. Temperature
Why is water sometimes called the universal solvent? It dissolves solids, such as sugar and salt.
Why does ice float in water? The molecules are farther apart in an ices cube with less energy, because hydrogen bonding takes over, making the ice cube less dense and causing it to float.
What are two sources of water for earths oceans? 1. Water vapor expelled from volcanoes that condensed and precipitated. 2. Melted ice and asteroids.
What are the five features of the ocean floor? 1. Continental margins 2. (3 regions- continental shelf, slope, and rise) 3. Abyssal plains 4. Mid-ocean ridges 5. Ocean trenches
What are the three ocean zones? Surface zone, middle zone, and deep zone.
In temperate regions, as depth increases, temperature does what? Decreases.
What is the coriolis effect? The movement of wind and water to the right or left, depending on the hemishphere they are in. The coriolis effect is caused by earths rotation.
What types of objects do you think the wind can move in the ocean? Objects that are light, and that present a solid surface above the water.
How does upwelling occurr? When the wind blows warmer surface water away from an area and deeper, colder water moves upward and replaces it.
Created by: ilikecookies123