1. Tides
Study Pack #9

2. Today’s Goal! I can explain what causes tides.
I can compare spring and neap tides.

3. What is a tide? Regular rise and fall of the water level along a shore
High tide
Low tide
While one side of the earth is experiencing high tide, the other is experience low tide
Caused by pull between earth and moon

4. Tides and the Moon
Moon’s gravitational pull causes water to bulge on one side of the earth facing the moon and opposite the moon causing high tide
Water is drawn away from the other two sides causing low tide
The difference between high tide and low tide is called the tidal range

5. Tides and the Moon
At certain times in the year, the alignment of the sun, moon, and earth cause spring tides and neap tides

6. Spring Tide High tides are HIGHER than usual
Low tides are LOWER than usual
Occurs at new moon and full moon

7. Neap Tide High tides are LOWER than usual
Low tides are HIGHER than usual
Occurs at first quarter and third quarter