Explorando la Tierra, el sol y la luna: las fases de la luna

The video explains that the moon does not produce its own light but reflects sunlight. It describes the phases of the moon, which are caused by its rotation around the Earth. The phases include the new moon, crescent, first quarter, full moon, waning, and third quarter. Each phase is characterized by the amount of the moon's surface illuminated by the sun, as seen from Earth. The cycle repeats approximately every 28 days.

What is the primary source of the light we see from the moon?

• The moon reflects light from the Earth.

• The moon reflects light from the sun.

• The moon generates its own light.

• The moon absorbs light from the stars.

What causes the different shapes of the moon that we observe from Earth?

• The Earth's shadow covers parts of the moon.

• Different sections of the moon are illuminated by the sun.

• The moon changes its shape.

• The moon's surface changes over time.

During which phase is the moon not visible from Earth?

• Full Moon

• First Quarter

• Waning Crescent

• New Moon

What is the phase called when the moon is half illuminated and visible from Earth?

• Waning Gibbous

• Full Moon

• First Quarter

• New Moon

What happens to the illuminated area of the moon after a full moon?

• It increases in size.

• It remains the same.

• It disappears completely.

• It decreases in size.