Practice: Moon Phases and Eclipses

Front

What is the Waxing Crescent phase of the Moon?

Back

The Waxing Crescent is the phase of the Moon where a small, crescent-shaped sliver of the Moon is illuminated, increasing in size as it approaches the First Quarter.

Front

How long does a complete cycle of moon phases take?

Back

Almost a month (approximately 29.5 days).

Front

What is the reason we see different phases of the Moon?

Back

We see different amounts of the sunlit half of the Moon from Earth due to its position in relation to the Earth and Sun.

Front

Why do we always see the same side of the Moon from Earth?

Back

Because the Moon rotates and revolves around the Earth at the same rate, a phenomenon known as synchronous rotation.

Front

What is a lunar eclipse?

Back

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to cover the Moon.

Front

What is a solar eclipse?

Back

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking all or part of the Sun's light.

Front

What are the four main phases of the Moon?

Back

The four main phases are New Moon, First Quarter, Full Moon, and Last Quarter.

Front

What is the New Moon phase?

Back

The New Moon phase is when the Moon is positioned between the Earth and the Sun, and the side of the Moon facing Earth is not illuminated.

Front

What is the Full Moon phase?

Back

The Full Moon phase occurs when the entire face of the Moon is illuminated by the Sun, making it fully visible from Earth.

Front

What is the difference between waxing and waning?

Back

Waxing refers to the Moon's illumination increasing (from New Moon to Full Moon), while waning refers to the illumination decreasing (from Full Moon to New Moon).