Solar and Lunar

Eclipses

Solar Eclipse

During a solar eclipse, the moon blocks our view of the Sun. It only happens during a new moon. The shadow created by the moon only covers a small area. Not everyone sees a solar eclipse

when it occurs.

LUNAR ECLIPSE…

A lunar eclipse occurs when the moon moves into the Earth’s shadow. This only happens during a full moon. Everyone on Earth sees the lunar eclipse when it occurs.

Lunar Eclipse

TIDES:

• Tides result from the pull of gravity on the earth, between the earth and moon and between the earth and the sun. The gravitational pull of the sun on the earth is about 178 times stronger than the gravitational pull on the earth from the moon. However, because of the moon’s close location to the earth, when compared to the sun, the tidal pull by the moon is over twice that of the sun.

Strong Tides!!

Weak Tides… 2 forces pulling at right angles

• When all three are in line (around full and new moons), the combined effect of the moon's and sun's pull on the earth's water is at its greatest resulting in the greatest ranges between high and low tide. This is called a "spring" tide (from the water springing or rising up).

http://space.about.com/library/weekly/sun2.htm

Bay of Fundy

Gravity and Tides Review