Question

1. at which two moon phases will the difference in height between high tide and low tide most likely be the greatest?

a) new crescent and old gibbous b) first quarter and last quarter
c) new gibbous and old crescent d) new moon and full moon

1. the same side of the moon always faces earth because the period of revolution of the moon is

a) shorter than the period of rotation of earth
b) equal to the period of rotation of earth
c) shorter than the period of rotation of the moon
d) equal to the period of rotation of the moon

1. eclipses do not occur each time that the moon revolves around earth because the moons

a) diameter is greater than ear meter b) orbit is inclined to earths orbit
c) orbit is less eccentric than s orbit d) diameter is less than earths diameter

Explanation:

Question 2

When the Moon is in the new Moon and full Moon phases, the Sun, Earth, and Moon are aligned (either in a straight line for new Moon - Sun - Moon - Earth or Earth - Sun - Moon for full Moon). This alignment causes the combined gravitational pull of the Sun and Moon on Earth's oceans to be the strongest, resulting in the greatest difference (spring tides) between high and low tides. In other phases (like quarter - Moon phases), the Sun and Moon's gravitational pulls are perpendicular to each other, resulting in weaker tidal differences (neap tides).

The Moon has a phenomenon called synchronous rotation. This means that the time it takes for the Moon to complete one rotation around its own axis (its period of rotation) is equal to the time it takes for the Moon to complete one revolution around the Earth (its period of revolution). As a result, the same side of the Moon always faces the Earth.

Eclipses (solar and lunar) occur when the Sun, Earth, and Moon are in a straight line. However, the Moon's orbit around the Earth is inclined (by about \(5^{\circ}\)) to the Earth's orbit around the Sun. So, most of the time, when the Moon revolves around the Earth, it is either above or below the plane of the Earth's orbit around the Sun, and a straight - line alignment (required for an eclipse) does not occur.

Answer:

D. new Moon and full Moon

Question 3