To increase gradually in size. The illuminated part of the moon is getting bigger.
To decrease gradually in size. The illuminated part of the moon is getting smaller.
Less than half of the moon is fully illuminated
More than half, but less than fully illuminated
One half of the moon (facing Earth) appears to be illuminated.
the force of attraction between any two objects in the universe.
the maximum height reached by a rising tide.
the minimum height of a falling tide.
a tide with the smallest difference between high and low tide. occurs when the Sun, Moon, and Earth form a right angle. Occurs during first quarter and last quarter phases.
the difference between the greatest value and the smallest value. To find this you subtract the smallest value from the greatest value.
a tide with the biggest difference between high and low tide. Occurs when the Sun, Moon, and Earth are aligned (in a line). Occurs during new moon and full moon phases.
The regular rise and fall of the level of water in the ocean.
One of the different shapes of the moon as seen from Earth.
The partial or total blocking of one object by another.
The Earth blocks the sunlight from reaching the moon. This occurs when the moon is in the full moon position.
The moon blocks the sunlight from reaching the Earth. From Earth we can't see the sun. This occurs when the moon is in a new moon position.
The darkest part of a shadow where a total eclipse will occur.
The lighter part of the shadow surrounding the umbra where a partial eclipse will occur.
Total solar eclipse
a complete blocking of the sun. occurs when you are standing in the moon's umbra.
Total lunar eclipse
a complete blocking of the sunlight from reaching the moon. occurs when the moon is completely in the Earth's umbra
partial solar eclipse
part of the sunlight is blocked by the moon. occurs when you are standing in the moon's penumbra
partial lunar eclipse
part of the sunlight is blocked from reaching the moon. occurs when the moon is partly in the umbra and partly in the penumbra.