Question

1. what is a lunar eclipse?

a. when the moon comes between the earth and the sun
b. when the earth comes between the moon and the sun
c. when the moon is partially obscured by the earths shadow
d. when the moon reflects sunlight back to the earth

1. how long does it take for the moon to orbit around the earth?

a. 1 day
b. 7 days
c. 28 days
d. 365.25 days

1. what causes day and night on earth?

a. the rotation of the earth on its axis
b. the orbit of the earth around the sun

Explanation:

For Question 3:

A lunar eclipse occurs when Earth blocks sunlight from reaching the Moon, casting Earth's shadow on the Moon. Option a describes a solar eclipse, option b is the cause of the lunar eclipse but not the definition of the event itself, and option d is a constant property of the Moon.

For Question 4:

The Moon's orbital period (sidereal month) around Earth is approximately 27.3 days, but the synodic month (the time between identical lunar phases, which is the commonly referenced orbital period for this type of basic question) is about 29.5 days, and 28 days is the closest option provided.

For Question 5:

Day and night are created as Earth spins on its axis, so different parts of the planet face toward or away from the Sun. The orbit around the Sun causes seasons, not day and night.

Answer:

1. c. When the Moon is partially obscured by the Earth's shadow
2. c. 28 days
3. a. The rotation of the Earth on its axis