2/12/ Moon Phases and Eclipses 2/12/2015 Application: Ws Connection: The next Solar Eclipse is scheduled to be viewed in the US on May 20, If we are in San Antonio, explain what will we see and WHY. Exit :  Explain why we have spring and neap tides. What is the difference between them? Tides

February 12, 2014 AGENDA Objective 8.7 C Relate the position of the Moon and Sun to their effect on ocean tides by reading and writing while completing notes and an activity ws. 1. Starter 2. Notes 3. Activity TURN IN YOUR VOCAB!!!

DateLecture/ Activity/ Lab Page Table of Contents 1/26 Wind, Climate, and Ocean Currents /27 Convection and Ocean Currents /28 Fronts and Air Masses /29 Pressure and Atmospheric Movement /2 Weather Walk Lab /3 Severe Weather and Precipitation /5 Rotation, Revolution, and seasons /6 Seasons Lab /9 Moon Phases and Eclipses /10 Moon Phase Graphic Organizer /11 Lunar Lollipops /12 Tides Notes

Tides The gravitational pull of the Moon and the Sun creates tides on the Earth.

High Tides During 24 hours period, two high tides occur. High tides occur when the Earth, the Sun, and the Moon are in a line with one another. Each side of the earth that is in line with the sun and moon experiences this type of tide.

Low Tides As earth rotates, the tides move around the Earth alternating between high and low tides approximately every 6 hours. In a 24 hour time period, two low tides occur. Low tides occur on each side of the earth when the gravitational forces of the Moon and the Sun are perpendicular to one another.

Tidal range is the vertical distance in the height of the water between high and low tides. Ranges vary worldwide, from less than 30 cm (1 ft) in some places to over 15 meters (50 ft). 6 hours. Tidal range 30 ft tidal range

Spring Tides Spring tides are especially strong tides and have the greatest tidal range. Spring tides occur every two weeks when the earth, moon, and sun are in alignment. These greater than average tidal ranges occur twice a month, during new and full moons, and are called spring tides.

Neap Tides Neap tides are especially weak tides and have the smallest tidal range. When the moon is at a right angle to the sun and earth, the moon’s gravitational pull is at right angles to the sun’s lesser gravitational pull. Neap tides occur twice a month, during the first and third quarter moons.

2/12/ Moon Phases and Eclipses 2/12/2015 Application: Ws Connection: The next Solar Eclipse is scheduled to be viewed in the US on May 20, If we are in San Antonio, explain what will we see and WHY. Exit :  Explain why we have spring and neap tides. What is the difference between them? Tides