The Coriolis Effect is the deflection of moving objects when they are viewed in a rotating reference frame. In oceanogra

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The Coriolis Effect Is The Deflection Of Moving Objects When They Are Viewed In A Rotating Reference Frame In Oceanogra 1 (177.72 KiB) Viewed 148 times

The Coriolis Effect is the deflection of moving objects when they are viewed in a rotating reference frame. In oceanography, we are most interested in how the Coriolis Effect moves winds and ocean currents on the rotating Earth. To better understand the Coriolis Effect, follow these instructions to demonstrate the Coriolis Effect for yourself. First, let's explore the perspective of an object moving from the North Pole towards the Equator: 1) On the map of the Northern Hemisphere below, label the U.S. East Coast with an E and the West Coast with a W. 2) Draw an arrow from the W to the E, indicating the direction of rotation for the Earth. (The sun rises in the east and sets in the west.) 3) Draw an arrow in the same direction around the North Pole. Which direction is the arrow pointing? (circle one) Clockwise Counterclockwise 4) Use a pencil or pen to make a hole in the paper at the North Pole. Hold the pencil or pen straight up on the table through the hole in the North Pole. The paper should be flat on the table. Rotate the paper in the direction of the arrow to simulate the rotation of the Earth. 5) Hold another pencil and place it near the North Pole. Pick a spot in the room, like a door. As you rotate the paper, drag the pencil from the North Pole toward the door. Which direction does the line curve? (circle one) Right Left Om Sa
Next, let us explore the perspective of an object moving from the South Pole towards the Equator: 6) On the map of the Southern Hemisphere, label the East and West coast of South America. (W in Ecuador, and E in Brazil.) 7) Draw an arrow from W to E. 8) Draw an arrow in the same direction around the South Pole. Which direction is the arrow pointing? (circle one) Clockwise Counterclockwise 9) As you did with the Northern Hemisphere, rotate the map and draw a line extending away from the South Pole. Which direction does the line curve? (circle one) Right Left D
Returning to the map of the Northern Hemisphere. 10) Trace the circle representing the line of latitude closest to the North Pole, placing an X in Greenland. Someone at that X will travel around that circle in one day. 11) Trace the circle representing Equator, placing a W on the west coast of South America in northern Ecuador. Someone at W will travel around the equator in one day. 12) Which person must travel faster? (circle one) Greenland Ecuador 13) Suppose we shoot a cannon ball north from the W in Ecuador. Draw an arrow north from the W in Ecuador to Miami. 14) Because the Earth rotates, it will not follow this straight path. Draw an arrow along the Equator through South America, from west to east, to show how the Earth rotates. 15) When an object moves from the Equator to the north, it retains the velocity it had as it was rotating around the equator. So, a cannon ball that is fired due north, toward Miami, will also be moving through the air to the east, as if it were still at the equator. Meanwhile, Earth is also moving under the cannon ball, but Earth's rotation is slower as you move north. To simulate this combination of effects, draw a curved arrow from the W in Ecuador through Panama to Puerto Rico. Which direction does the line curve? (circle one) Left Right 16) Is this the same direction-right or left-as the arrow you drew from the North Pole? (circle one) Yes No D.
Exploring the Southern Hemisphere again. 17) Find Ecuador along the equator, again. Write a W there. 18) Draw a straight arrow due south from the W in Ecuador into the ocean. 19) Consider a cannon ball fired due south. The cannon ball retains the velocity of Earth's rotation at the equator and flies over the Earth, which is rotating under the cannon ball. To simulate this combination of effects, draw a curved arrow from the W in Ecuador to Chile. (Where in Chile is not important, as we aren't making exact calculations.) 20) Which direction does the line curve? (circle one) Right 21) Is this the same direction-right or left-as the arrow you drew from the South Pole? (circle one) Yes In summary: ● Left No The Coriolis Effect is the deflection of objects moving in a rotating reference frame. Earth rotates from west to east, which is counterclockwise around the North Pole and clockwise around the South Pole. The rotation causes winds, currents, and other objects to move to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. 33 '