The movement of ocean water
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The Movement of Ocean Water. Chapter 14 Section 1. Bellringer. Imagine you are stranded on a desert island. You stuff a distress message into a bottle & throw it into the ocean. Is there any way to predict where your bottle may land?. Bellringer.

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The Movement of Ocean Water

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The movement of ocean water

The Movement of Ocean Water

Chapter 14 Section 1


Bellringer

Bellringer

  • Imagine you are stranded on a desert island. You stuff a distress message into a bottle & throw it into the ocean.

  • Is there any way to predict where your bottle may land?


Bellringer1

Bellringer

  • Is there any way to predict where your bottle may land?

  • Yes, ocean water contains stream-like movements of water called currents. These currents are influenced by a number of factors.


Currents

Currents

Objectives

  • Describe surface currents.

  • List the three factors that control surface currents.


The movement of ocean water

Chapter 14

Section1 Currents

One Way to Explore Currents

  • Ocean water contains streamlike movements of water called ocean currents.

  • Norwegian explorer Thor Heyerdahl proved his theory that ocean currents influenced human migration by using a raft that was powered only by wind and ocean currents.


The movement of ocean water

Chapter 14

Section1 Currents

Surface Currents

  • Horizontal, streamlike movements of water that occur at or near the surface of the ocean are called ocean currents.

  • Surface currents are controlled by three factors: global winds, the Coriolis effect, and continental deflections.


The movement of ocean water

Chapter 14

Section1 Currents

  • Global Winds: Winds that blow across the Earth’s surface create surface currents in the ocean. Different winds cause currents to flow in different directions.

  • The Coriolis Effect is the apparent curving of moving objects from a straight path due to the Earth’s rotation.


The movement of ocean water

Chapter 14

Section1 Currents

  • Continental Defections: When surface currents meet continents, the currents deflect, or change direction.


The movement of ocean water

Chapter 14

Section1 Currents

Surface Currents, continued

  • Taking Temperature Currents are also affected by the temperature of the water in which they form.

  • The next slide shows Earth’s surface currents. Warm-water currents are shown as red arrows, and cold-water currents are shown as blue arrows.


The movement of ocean water

Chapter 14

Section1 Currents


Currents1

Currents

Objectives

  • Describe surface currents.

  • List the three factors that control surface currents.


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