What Causes The Tides To Occur Tides Lab

What Causes The Tides To Occur?

Tides Lab � Follow � Use instructions on your lab sheet. the table and graph provided to complete the lab activity. � Class discussion of results.

Tides �Tides occur due to the gravitational pull of the Moon & Sun on the Earth’s oceans based on the positions of these bodies interacting in a system. � Predict: Which has more effect on Earth’s tides: Sun or Moon? � There are 2 high and low tides that occur every day.

Spring Tides & Neap Tides � Spring tides ◦ Occur when the moon is in the full or new phases. (Straight line) ◦ When high tides are at their highest and low tides are at their lowest (largest range between high & low tide) these are known as spring tides. � Neap tides ◦ Occur when the moon is in the first or last quarter phases. (Right angles) ◦ When the range between high and low tide is at it’s smallest, these are known as neap tides.

Spring & Neap Tide Animation

How do ocean tides affect humans? � Fishing ◦ Fish change movement & migration patterns based on the flow of tides. � Vessel Movements ◦ Movement of ships ◦ Construction of docs ◦ Availability of certain docs based on tide � Flooding & Erosion � Power Generation ◦ Hydroelectric dams ◦ Power buoys

In closing… � Describe spring & neap tides. � Describe the phase & position of the moon during spring & neap tides.