Bellringer EXPLAIN IN COMPLETE SENTENCES WHAT IS SOLAR SYSTEM

The Earth-Moon-Sun System

Earth’s Moon It takes 27.3 days for the Moon to revolve once around Earth Because Earth also revolves around the Sun, it takes more than two more days for the Moon to line up with Earth and the Sun A complete lunar phase cycle takes 29.5 days

The Moon keeps the same side facing Earth because it takes 27 The Moon keeps the same side facing Earth because it takes 27.3 days to rotate once on its axis

Why is the same side of the Moon always facing the Earth? The Moon’s period of revolution and period of rotation are the same

How does the Moon affect Earth? A tide on Earth is caused by a giant wave produced by the gravitational pulls of the Sun and the Moon This rise of sea level is called high tide About six hours later, as the trough of the wave approaches, sea level drops, causing a low tide

There are different types of tides

The Sun is much farther Because of this, the Moon has greater effect on Earth’s tides than the Sun When the Moon and the Sun pull together, high tides are much higher and low tides are much lower This is called a spring tide

Neap tide

What happens to the sea level at spring tide High tides are higher and low tides are lower

Moonlight Moon phases are the changing appearances of the Moon as seen from Earth The phase you see depends on the relative positions of the Moon, Earth and Sun

A new moon occurs when the Moon is between Earth and the Sun The side of the Moon facing away from Earth is lighted and the side of the Moon facing Earth receives no light from the Sun

Waxing – the lighted portion that we see appears larger each night The first phase we see after a new moon is called the waxing crescent About a week after a new moon is the first quarter The moon is in the waxing gibbous phase from the first quarter up until the full moon

The waning crescent occurs before another new moon After a full moon, the lighted portion that we see begins to appear smaller The phases are said to be waning When only half of the side of the Moon facing Earth is lighted, the third quarter phase occurs The waning crescent occurs before another new moon

HOMEWORK DESCRIBE THE WAY YOU WATHCH THE SUN AND THE MOON LOCATION ON THE SKY