Why Aren't There Eclipses Every Month?

Which arrangement of celestial bodies results in a solar eclipse?

• The Earth is positioned between the Sun and the Moon.

• The Moon is positioned between the Sun and the Earth.

• The Sun is positioned between the Earth and the Moon.

• The Moon is at its furthest point from the Earth.

What phenomenon occurs when the Earth is positioned directly between the Sun and the Moon, casting a shadow on the Moon?

• A solar eclipse.

• A lunar eclipse.

• A new moon.

• A full moon.

What is the primary reason that solar eclipses do not occur every month?

• The Moon's orbit around Earth is not perfectly circular.

• The Earth's orbit around the Sun is elliptical.

• The Moon's orbital plane is tilted relative to Earth's orbital plane around the Sun.

• The Sun's light is not always strong enough to cast a full shadow.

For a solar eclipse to occur, the Moon must be within a certain angular distance from one of its orbital nodes. What is this angular limit on either side of a node?

• 5 degrees

• 10 degrees

• 17 degrees

• 360 degrees