Tides and Eclipses

Eclipse

The partial or total blocking of one object in space by another

Tide

The periodic rise and fall of the level of water in the ocean

Neap tide

A tide with the least difference between high and low tide that occurs when the sun and moon pull at right angles to each other.

Spring tide

a tide just after a new or full moon, when there is the greatest difference between high and low water.

Lunar eclipse

the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon

Solar eclipse

The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.

Umbra

The darker, inner shadow cast during an eclipse

Penumbra

Outer part of a shadow from an eclipse; any surrounding region, fringe, periphery; any area where something "sort of" exists

low tide

The time at which the tide reaches its lowest level

high tide

The time at which the tide reaches its highest level

total eclipse

object is completley covered

partial eclipse

an eclipse in which the eclipsed body is only partially obscured

gravity

A force of attraction between objects that is due to their masses.

First Quarter Moon

The phase of the moon when it is one-quarter of the way through it's orbit, and we see half of the moon lighted on the right side.

Third Quarter Moon

The phase of the moon when it is three-quarters of the way through its orbit, and we see half of the moon lighted on the left side.

Full Moon

Whole Moon is lit

New Moon

Moon phase that occurs when the Moon is between Earth and the Sun, at which point the Moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth.

annular eclipse

an eclipse of the sun in which the edge of the sun remains visible as a bright ring around the moon.

Revolution of Earth

365.25 days to revolve around Sun on orbit

Rotation of the Earth

24 hours and causes day and night