Unit 5

The daily rise and fall of Earth’s waters on the shorelines. The daily rise and fall of Earth’s waters on the shorelines. Caused by the gravitational pull between the Earth, moon, and Sun. Caused by the gravitational pull between the Earth, moon, and Sun.

Spring Tides Spring Tides – Twice a month, the Sun and moon are lined up. – This combined gravity creates the STRONGEST pull on the water.

Neap Tides Neap Tides – Twice a month, the Sun and moon are at right angles to each other. – This combined gravity creates the WEAKEST pull on the water.

is kept in orbit by Earth’s gravity. is kept in orbit by Earth’s gravity. is visible because it reflects sunlight. is visible because it reflects sunlight. does NOT give off its own light. does NOT give off its own light.

As the Earth revolves around the Sun, the moon revolves around the Earth. As the Earth revolves around the Sun, the moon revolves around the Earth. The phase of the moon you see depends on how much of the sunlit side of the moon is facing Earth. The phase of the moon you see depends on how much of the sunlit side of the moon is facing Earth.