Question

1. the diagram below shows a model of the moons orbit around earth. letters a, b, c, and d represent four positions in the moons orbit.

what is the approximate length of time the moon takes to travel from position a to position c?
a) 1 day b) 15 days
c) 30 days d) 365 days

1. the passage of the moon into earths shadow causes a

a) lunar eclipse b) solar eclipse
c) new moon d) full moon

Explanation:

Step1: Determine the Moon's orbital period

The Moon takes approximately 30 days to complete one full orbit around the Earth.

Step2: Calculate the time from A to C

Position A to position C is half of the Moon's orbit. Since a full orbit is about 30 days, half of it is \( \frac{30}{2}=15\) days.

for Question 10:
When the Moon passes into Earth's shadow, it is called a lunar eclipse. A solar eclipse occurs when the Moon blocks the Sun's light from reaching Earth. A new Moon is when the Moon is between the Earth and the Sun (not in Earth's shadow), and a full Moon is when the Earth is between the Sun and the Moon (but not necessarily in Earth's shadow for the definition of full Moon).

Answer:

B. 15 days