Moon Phases

The diagram represents eight positions of the Moon in its orbit. Why are high tides on Earth greatest when the Moon is in position A and in position E?

• The Moon is closer to the Sun.

• The Moon is closer to Earth.

• The Moon, the Sun, and Earth are aligned.

• The Moon is in the same phase at both locations.

Base your answer on the diagram and on your knowledge of Earth science. The diagram represents the Moon at different positions, labeled A, B, C, and D, in its orbit around Earth.

During which Moon phase could an observer on Earth see a lunar eclipse occur?

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Base your answer on the diagram, which shows positions of the Moon in its orbit and phases of the Moon as viewed from New York State. Which statement best explains why the same side of the Moon is viewed from Earth as the Moon goes through its phases?

• The Moon's period of rotation equals the Moon's period of revolution around Earth.

• The Moon's period of rotation equals Earth's period of revolution around the Sun.

• The Moon's period of rotation equals Earth's period of rotation.

• The Moon does not rotate as it revolves around Earth.

Base your answer on the diagram, which shows Earth in orbit around the Sun, and the Moon in orbit around Earth. M₁, M₂, M₃, and M₄ indicate positions of the Moon in its on Letter A indicates a location on Earth's surface. An observer at location A noticed that the apparent size of the Moon varied slightly from month to month when the Moon was at position M4 in its orbit. Which statement best explains this variation in the apparent size of the Moon?

• The Moon expands in summer and contracts in winter.

• The Moon's distance from Earth varies in a cyclic manner.

• The Moon shows complete cycles of phases throughout the year.

• The Moon's period of rotation is equal to its period of revolution.

The diagram shows the Moon as it revolves around Earth. The numbered locations represent different positions of the Moon in its orbit. Which Moon phase would be seen by an observer in New York State when the Moon is at position 2?

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The frequency of Earth's cycle of ocean tides is primarily controlled by

• Earth's rotation and the Moon's rotation

• Earth's rotation and the Moon's revolution

• Earth's revolution and the Moon's rotation

• Earth's revolution and the Moon's revolution

The table shows the times of ocean high tides and low tides on a certain date at a New York State location. At approximately what time on the following day did the next high tide occur at this location?

• 5:40 a.m.

• 4:40 a.m.

• 5:40 p.m.

• 4:40 p.m.

Which two motions cause the Moon to show a complete cycle of phases each month when viewed from New York State?

• the Moon's rotation and Earth's rotation

• the Moon's rotation and the Sun's rotation

• the Moon's revolution and Earth's rotation

• the Moon's revolution and the Sun's rotation

How many days are required for the Moon to complete a cycle of phases from the new Moon position represented in the diagram to the new Moon the following month?

• 2.2 d

• 27.3 d

• 365.26 d

• 29.5 d

The diagrams represent Earth's ocean tides at four different positions of the Moon. Which diagram shows the Moon position that will produce the highest high tides and the lowest iow tides? (The diagrams are not drawn to scale.)

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