1. Tides
Unit 4 Lesson 3

2. Bell Ringer
Sketch the moon, sun, and earth in a solar eclipse. If it were not an eclipse, what moon phase would you see? What do you actually see from Earth?
Hint: In a solar eclipse, the moon is casting a shadow on the Earth.
Sketch the moon, sun, and earth in a lunar eclipse. If it were not an eclipse, what moon phase would you see? What do you actually see from Earth?
Hint: In a lunar eclipse, the Earth is casting a shadow on the moon.

3. I. What is a tide? Daily changes in the level of ocean water
Tidal Range – the difference between ocean levels at high tide and low tide
Caused by the gravitational pull of the moon and the sun
The Moon is more influential because it is closer

4. II. Types of tides Spring tides
Happens when Earth, Moon, and sun are in a straight line
Strongest daily tidal range
Neap tides
Happens when the Earth, moon, and sun form a 90° angle
Weakest daily tidal range

5. III. How do tides affect earth?
Allows for nutrient dispersal around the planet
Commercial fisherman monitor tides
Organisms have evolved around tidal events

6. Left Side Reflection
Sketch and label two unique examples of a spring tide and answer the following questions:
Are the oceans being pulled toward the poles or toward the equator by the sun and the moon?
What moon phases are seen during a spring tide?
Sketch and label two unique examples of a neap tide and answer the following questions:
What moon phases are seen during a neap tide?