1. Bellringer
EXPLAIN IN COMPLETE SENTENCES WHAT IS THE SYSTEM MOON - EARTH

2. The Sun-Earth-Moon System
Rotation
Coriolis Effect
Tides
Revolution
Seasons
Moon
Lunar Eclipse
Solar Eclipse

3. Rotation Earth is a round, 3-dimensional sphere
23.5 °
Earth is a round, dimensional sphere
AXIS – imaginary vertical line around which earth spins
23.5 ° from vertical

4. Rotation
ROTATION –
the spinning of Earth around its axis

5. Rotation Effects of ROTATION
Night and day – plants, animals, and people
Daily change in temperature

6. Effects of ROTATION Earth bulges at the equator
Polar diameter – 7900 miles (12,714 km)
Equatorial diameter – 7927 miles (12,756 km)

7. Rotation How fast is the Earth spinning around its axis?
At the equator, the Earth's surface moves 40,070 kilometers in 24 hours. That is a speed of about 1040 miles/hr (1670 km/hr or 0.5 km/sec).
[This is calculated by dividing the circumference of the Earth at the equator (about 24,900 miles or 40,070 km) by the number of hours in a day (24).]
As you move toward either pole, this speed decreases to almost zero (since the circumference of the spinning circle at the extreme latitudes approaches zero).

8. Rotation Effects of ROTATION CORIOLIS EFFECT
Earth rotates at different speeds at different latitudes
Any moving solid, liquid , or gas is turned to the RIGHT of its intended path in the Northern Hemisphere
Any moving solid, liquid , or gas is turned to the LEFT of its intended path in the Southern Hemisphere
Winds
Ocean currents

9. Effects of ROTATION
CORIOLIS EFFECT

10. Effects of ROTATION
CORIOLIS EFFECT

11. Effects of ROTATION
CORIOLIS EFFECT

12. Rotation Effects of ROTATION Tides
The gravitational pull of the moon and the sun produces a rhythmic rise and fall of the oceans as the Earth rotates

13. Tides Effects of ROTATION
Result of the gravitational attraction between the Earth, sun, and moon.
As the moon rotates around the Earth, it pulls the water on the nearest side of the Earth outward into a bulge.
A similar bulge on the opposite side of the Earth is caused by inertia - gravitational attraction of the moon is less water furthest away than on the Earth.

14. SPRING TIDE
TIDES
NEAP TIDE

15. TIDES
SPRING TIDE
During time of the new moon and full moon, the sun and moon are in a straight line
Combined gravitational pull produces spring tides
High tides are very high and low tides are very low.

16. TIDES
NEAP TIDE
When sun and moon are at right angles from the Earth, during the quarter phases of the moon
Gravitational pull on the oceans is less
A smaller difference between high and low tide

17. TIDES
Nova Scotia's Hall's Harbour at high tide.
The tides have a vertical difference, between high and low tide, of up to 14 metres (48 feet)!
And at low tide just six hours later.

18. HOMEWORK
DRAW THE DIAGRAMS OF THE SUN AND MOON LOCATION FOR YOUR OBSERVATIONS FOR THIS WEEK