The Earth-Sun-Moon System

Question 1

During which phase of the moon do neap tides occur?

Revolt · Accepted Answer

quarter

Question 2

In which direction does the Sun appear to move across the sky?

Revolt · Accepted Answer

from east to west

Question 3

Why do lunar and solar eclipses not happen every month?

Revolt · Accepted Answer

The tilt of the moon’s axis does not allow for monthly alignment.

Question 4

Why do we see different phases of the lunar cycle?

Revolt · Accepted Answer

As the moon revolves around Earth, the different amounts of the sunlit side faces Earth.

Question 5

Which movement causes day and night on Earth?

Revolt · Accepted Answer

rotation of Earth

Question 6

How long does it take for the moon to complete one revolution around Earth?

Revolt · Accepted Answer

27.3 days

Question 7

How often do spring and neap tides occur?

Revolt · Accepted Answer

twice a month

Question 8

During which phase does Earth see more than half of the moon’s surface?

Revolt · Accepted Answer

waxing gibbous

Question 9

Study the image.

Revolt · Accepted Answer

6 and 12

Question 10

During which moon phase do spring tides occur?

Revolt · Accepted Answer

new moon and full moon

The Earth-Sun-Moon System Answers