Question

1. ocean tides observed at coastal locations each day are primarily caused by

a) the changing phases of the moon
b) seasonal changes in the compass location of sunrise
c) earths revolution around the sun
d) the gravitational attraction between the moon and earth

1. one complete cycle of the phases of the moon takes approximately one

a) year b) day
c) week d) month

1. which object is closest to earth?

a) mars b) venus
c) the moon d) the sun

Explanation:

• Question 5: Ocean tides are mainly due to the gravitational pull of the Moon on Earth. The changing phases of the Moon (A) are a result of its position relative to Earth and the Sun, not the cause of tides. Seasonal changes in sunrise location (B) and Earth's revolution around the Sun (C) do not directly cause daily tides.
• Question 6: The Moon's phases cycle approximately every month. A year (A) is the time for Earth to orbit the Sun. A day (B) is Earth's rotation period. A week (C) is an arbitrary human - defined time period not related to the Moon's phase cycle.
• Question 7: The Moon is Earth's natural satellite and is much closer than Mars (A), Venus (B), or the Sun (D).

Answer:

1. D. the gravitational attraction between the Moon and Earth
2. D. month
3. C. the Moon