1. Review of Earth's Motions and Tides

2. Warm Up

3. Bill Nye Answer the questions that go along with this short video
Answer the questions that go along with this short video
They will be collected and graded

4. Let’s Review!

5. Tell me what you know! What is an axis?
How many motions does Earth have?
What is precession?
What is nutation?
What is a rotation?
What is a revolution?
What causes seasons?

6. Match the Terminology!

7. Tides

8. What are tides?
Tides are the rising and falling for the sea due to the attraction of the sun and moon
The Moon has a greater effect on tides than the Sun

9. Cycle of Tides Sea level rises High Tide Sea level falls Low Tide
Cycle starts over

10. Cycle of Tides Diurnal - one high tide and one low tide
Semidiurnal - two high tides and two low tides
Tide Cycle = 24 hours and 50 minutes
Do the Earth and Moon rotate in the same direction?

11. Low vs High
High tides are caused on the side of the Earth directly below the moon and on the opposite side
Low tides are on the side of the Earth that are located at the 90 degree angle

13. Gravity and Inertia Gravity - major force behind tides
Inertia - counterbalance of gravity

15. Types of Tides High - sea level at its highest
Low - sea level at its lowest
Spring - Sun and Moon aligned to create tides higher than high tides and lower than low tides
Neap - Sun and Moon create a 90 degree angle and create lower tides than usual

16. Spring tides occur during full and new moons
Neap tides occur during quarter moons