Warm Up: our MOON

Read pages 380- 383

Tides and Moon PhasesUnit 5

Tides

• The daily rise and fall of Earth’s waters on the shorelines.

• Caused by the gravitational pull between the Earth, moon, and Sun.

Two Types of Tides

• Spring Tides–Twice a month, the Sun and moon are

lined up.–This combined gravity creates the

STRONGEST pull on the water.

Two Types of 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.

Moon

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

Moon Phases

• 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.