Question

directions: complete all four parts of this assignment. read each question carefully and answer in the space provided. use full sentences when asked, and include sketches or diagrams where required. make sure your work is neat and complete.
part 1. define the following terms based off the notes
● solstice:
● equinox:
● spring tide:
● neap tide:
part 2. answer the following short answer questions in complete sentences.

1. what causes day and night on earth? what causes seasons on earth?
2. when it is summer in the northern hemisphere, what season is it in the southern hemisphere? why?
3. how do the phases of the moon affect the tides?
4. how does barycenter affect the tides?

Explanation:

• Solstice: The solstice is when the sun reaches its most northerly or southerly excursion relative to the celestial equator, marking the longest and shortest days of the year (summer and winter solstices respectively).
• Equinox: An equinox occurs when the sun is directly above the equator, resulting in nearly equal day and night lengths globally. There are two equinoxes a year, the vernal (spring) and autumnal (fall) equinoxes.
• Spring Tide: Spring tides occur when the gravitational forces of the sun and moon align, either during a new moon or full - moon phase, causing higher high - tides and lower low - tides.
• Neap Tide: Neap tides happen when the sun and moon are at right angles to each other (first and third quarter moon phases), resulting in less extreme tidal ranges.
• Day and night on Earth are caused by the rotation of the Earth on its axis. Seasons are caused by the tilt of the Earth's axis as it orbits the sun, leading to varying amounts of sunlight in different hemispheres at different times of the year.
• When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere because of the Earth's tilt. The Northern Hemisphere is tilted towards the sun during its summer, while the Southern Hemisphere is tilted away.
• The phases of the moon affect the tides because the gravitational pull of the moon on the Earth's oceans is stronger during new and full moons (spring tides) and weaker during first and third - quarter moons (neap tides).
• The barycenter, the center of mass between the Earth and the moon, affects the tides as the position of the barycenter relative to the Earth can influence the gravitational forces and the shape of the tidal bulges.

Answer:

• Solstice: The point in the Earth's orbit where the sun reaches its maximum or minimum declination, leading to the longest or shortest day of the year.
• Equinox: The time when the sun is directly above the equator, resulting in nearly equal day and night lengths.
• Spring Tide: Tides that occur when the sun, moon, and Earth are aligned, causing higher high - tides and lower low - tides.
• Neap Tide: Tides that occur when the sun and moon are at right angles to each other, resulting in less extreme tidal ranges.
• 1. Day and night are caused by the Earth's rotation on its axis. Seasons are caused by the tilt of the Earth's axis as it orbits the sun.
• 2. When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere because the Earth's tilt causes one hemisphere to receive more direct sunlight while the other receives less.
• 3. The moon's phases affect tides as during new and full moons, the sun and moon's gravitational forces combine, creating spring tides with higher high - tides and lower low - tides. During first and third - quarter moons, the gravitational forces partially cancel each other out, resulting in neap tides with less extreme tidal ranges.
• 4. The barycenter, the center of mass between the Earth and moon, influences the tides as its position affects the gravitational pull and the shape of the ocean's tidal bulges.