Earth, Sun, and Moon Relationships
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Questions and Answers

During a Neap Tide alignment, which phases of the Moon are most likely to occur?

  • First Quarter and Third Quarter (correct)
  • Waxing Gibbous and Waning Gibbous
  • Full Moon and New Moon
  • Waxing Crescent and Waning Crescent

An experiment conducted with a Foucault pendulum over several hours provides direct evidence for what phenomenon?

  • The elliptical nature of Earth's orbit
  • Earth's rotation on its axis (correct)
  • The precession of Earth's axis
  • Earth's revolution around the Sun

If an air mass is traveling from the North Pole towards the equator, which direction will it be deflected in the Northern Hemisphere due to the Coriolis Effect?

  • To the left (west)
  • The deflection is dependent on the time of the year
  • To the right (east) (correct)
  • Directly towards the equator with no deflection

Considering Earth's revolution around the Sun, toward which star does Earth's axial tilt consistently point throughout the year?

<p>Polaris (C)</p> Signup and view all the answers

When the North Pole is tilted towards the Sun, and the Sun's rays are most direct at 23.5° North latitude, which season is beginning in the Northern Hemisphere?

<p>Summer (C)</p> Signup and view all the answers

During the equinoxes, when the North Pole is neither tilted toward nor away from the Sun, which latitude receives the most direct sunlight?

<p>Equator (0°) (C)</p> Signup and view all the answers

Which of the following statements best describes the relationship between the Sun's altitude, shadow length, and time of year?

<p>A higher solar altitude produces a shorter shadow, typically occurring during the summer months. (C)</p> Signup and view all the answers

Given that the Earth rotates counterclockwise when viewed from above the North Pole, where would you expect to observe sunrise on the Summer Solstice in the Northern Hemisphere?

<p>North of East (D)</p> Signup and view all the answers

If a location's average yearly temperature is notably colder than other areas at the same latitude, what is the most likely contributing factor?

<p>Higher elevation, causing adiabatic cooling of the air. (A)</p> Signup and view all the answers

During which phase transition is the most energy absorbed by water?

<p>Vaporization of liquid water to gas. (A)</p> Signup and view all the answers

Considering Earth's rotation, if it is 3 PM at 75°W longitude, what time is it at 120°W longitude?

<p>12 PM (B)</p> Signup and view all the answers

A dark-colored, rough-textured surface is exposed to solar radiation. Which of the following is most likely to occur?

<p>Low reflection and high absorption of radiation, resulting in a warmer surface temperature. (D)</p> Signup and view all the answers

During the summer solstice in the Northern Hemisphere, towards which direction will a vertical flagpole's shadow point at solar noon?

<p>North (D)</p> Signup and view all the answers

If a star trail photograph shows a complete 90° arc around Polaris, approximately how many hours was the camera's shutter open?

<p>6 hours (D)</p> Signup and view all the answers

In a closed system, a container of water is heated from below. Which process will primarily transfer heat throughout the water?

<p>Convection, as heated water rises and cooler water sinks. (A)</p> Signup and view all the answers

Which statement accurately compares the characteristics of the atmosphere and the lithosphere?

<p>The atmosphere facilitates rapid heat transfer through convection, while the lithosphere primarily conducts heat slowly. (D)</p> Signup and view all the answers

Given the current understanding of stellar evolution, which of the following characteristics of a star is the MOST significant factor in determining its ultimate fate?

<p>The star's initial mass when it forms from a nebula. (D)</p> Signup and view all the answers

What critical process must occur within a protostar's core for it to officially transition into a main sequence star capable of emitting its own energy, and what fundamental force is primarily responsible for initiating the collapse of a stellar nebula that leads to the protostar's formation?

<p>The commencement of hydrogen fusion via the strong nuclear force; gravity. (A)</p> Signup and view all the answers

Considering the characteristics of stars, how does the luminosity of a star relate to its position on the Hertzsprung-Russell (H-R) diagram, and what does this tell us about stellar evolution?

<p>Luminosity varies along the main sequence, correlating with temperature and mass; stars evolve off the main sequence as their fuel is exhausted. (A)</p> Signup and view all the answers

Given the parameters defined by Kepler's Laws of Planetary Motion, which of the following statements accurately juxtaposes the relationships between a planet's orbital velocity, its distance from the star (perihelion and aphelion), and the star's gravitational influence?

<p>At perihelion, a planet's orbital velocity is at its maximum due to the stronger gravitational attraction, resulting from a shorter distance from the star. (C)</p> Signup and view all the answers

Assuming the current phase of the Moon is a waxing crescent and it is observed on the 7th day of the lunar cycle, predict the MOST probable date when the next full moon phase will be visible, considering the average synodic period of the Moon.

<p>Approximately on the 21st day of the same lunar cycle. (C)</p> Signup and view all the answers

Why does the near side of the Moon always face the Earth, and what specific characteristic of the Moon's orbit, calculable using data on page 15 of the ESRT, directly contributes to this phenomenon?

<p>The Moon is tidally locked with Earth; this is evidenced by the equality of the Moon's periods of rotation and revolution, which can be confirmed using data from the ESRT. (D)</p> Signup and view all the answers

Considering the orbital mechanics involved in eclipses, which of the following statements accurately describes why solar and lunar eclipses do not occur every month, despite the Moon's regular phases?

<p>The Moon's orbital plane is tilted relative to Earth's ecliptic plane, leading to alignment only at specific nodes. (D)</p> Signup and view all the answers

What specific alignment of the Earth, Moon, and Sun results in spring tides, and how does this alignment affect the gravitational forces exerted on Earth's oceans?

<p>Earth, Moon, and Sun in a straight line (syzygy); combined gravitational forces of the Moon and the Sun create the greatest tidal bulge. (D)</p> Signup and view all the answers

How does a volcanic eruption primarily influence atmospheric transparency and global climate?

<p>Decreases atmospheric transparency, leading to a cooling effect as solar radiation is blocked. (B)</p> Signup and view all the answers

Considering the dynamics of El Niño and La Niña, which statement accurately describes the trade winds and sea surface temperatures (SST)?

<p>During El Niño, trade winds weaken, and SSTs in the eastern Pacific increase above normal. (C)</p> Signup and view all the answers

What is the fundamental difference in air pressure and resulting weather patterns between summer and winter monsoons?

<p>Summer monsoon: low pressure on land resulting in wet, rainy conditions; Winter monsoon: high pressure on land leading to dry conditions. (B)</p> Signup and view all the answers

In the context of mountain barriers and prevailing winds, how do orographic effects influence regional climate regarding both temperature and precipitation?

<p>Windward side: cooler, wetter conditions due to adiabatic expansion; Leeward side: warmer, drier conditions due to adiabatic compression. (D)</p> Signup and view all the answers

Which of the following best exemplifies how the concentration of ozone gas in the atmosphere specifically mitigates environmental hazards?

<p>It blocks incoming ultraviolet radiation, preventing harmful effects on living organisms. (D)</p> Signup and view all the answers

How do high-pressure systems fundamentally differ from low-pressure systems in terms of air movement, cloud formation, and overall weather conditions?

<p>High-pressure: divergent, sinking motion, clear/dry conditions, cool; Low-pressure: convergent, upward motion, more clouds, lousy weather. (A)</p> Signup and view all the answers

How do greenhouse gases in the atmosphere influence the Earth's radiation budget, and what type of radiation is most affected by their presence?

<p>Greenhouse gases absorb and reradiate outgoing longwave radiation, trapping heat within the atmosphere. (C)</p> Signup and view all the answers

What is the interval used to draw isobars and how would this influence the precision of atmospheric calculations?

<p>Always drawn at a 4-mb interval, standardizing barometric pressure readings. (B)</p> Signup and view all the answers

Flashcards

Big Bang

The currently accepted theory for the formation of the Universe.

Age of the Universe

Approximately 13.8 billion years old according to current theories.

Evidence for Big Bang

Three pieces of evidence: cosmic microwave background radiation, redshift of galaxies, abundance of light elements.

Stellar Nebula

A cloud of gas and dust that initiates star formation.

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Protostar Formation

The initial force of gravity pulls matter together to form a protostar.

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Kepler’s First Law

Planets orbit the Sun in elliptical paths, with the Sun at one focus.

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Lunar Eclipse Alignment

Occurs when Earth is between the Sun and the Moon.

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Spring Tide

Occurs when the Earth, Moon, and Sun are aligned during full or new moons.

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Direction of a Shadow

At solar noon in the Northern Hemisphere, the Sun is in the southern sky, pointing shadows northward.

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Hydrosphere Coverage

The hydrosphere covers approximately 71% of the Earth's surface, primarily as oceans.

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Lithosphere Exposure

The lithosphere is the rigid outer layer of the Earth, and most of it is exposed at the surface as land.

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Earth’s Rotation Rate

The Earth rotates once approximately every 24 hours, creating day and night.

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Time Zone Width

Each time zone is approximately 15 degrees of longitude wide, corresponding to one hour of the Earth's rotation.

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Polaris Position

Polaris is located near the North Pole and remains relatively still while other stars appear to rotate around it.

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Conduction

Conduction is best in solids, where heat transfers through direct contact of particles.

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Phase Change of Water

Phase changes like gas to liquid (condensation) or liquid to solid (freezing) involve energy absorption or release.

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Windward vs Leeward

The windward side is humid and cooler, while the leeward side is dry and warmer.

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RACECAR Effect

RACECAR occurs on the windward side where rain falls because it rises and cools.

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SAW-C Effect

SAW-C occurs on the leeward side, leading to dry conditions as air descends.

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Greenhouse Gases

The three major greenhouse gases are carbon dioxide, methane, and nitrous oxide.

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Atmospheric Radiation

During the day, the Earth receives solar radiation, and at night, it emits infrared radiation.

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El Niño Winds

El Niño features winds that blow west to east, while La Niña has opposite winds, blowing east to west.

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Ozone Depletion Gas

The gas that blocks ultraviolet radiation is ozone (O3).

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High Pressure System

High-pressure systems are associated with clockwise winds, sinking air, and dry conditions.

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Neap Tide

A tide with the least difference between high and low water levels, occurring during the quarter phases of the Moon.

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Earth's Rotation Evidence

The Coriolis Effect shows how winds and currents move due to Earth's rotation.

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Tilt of Earth

Earth's axis stays tilted at 23.5 degrees, pointing towards Polaris.

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Direct Sun Rays Latitude

The Tropic of Cancer (23.5°N) and Tropic of Capricorn (23.5°S) are where the Sun's rays are most direct.

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Seasons of the Northern Hemisphere

Summer starts when the North Pole tilts towards the Sun; winter starts when it tilts away.

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Sun's Path Higher Altitude

A higher altitude of the Sun results in greater intensity of sunlight.

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Equinox Sunrise/Sunset

During an equinox, the sun rises due east and sets due west.

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Sun Shadow Length

A higher altitude of the Sun creates a shorter shadow.

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Study Notes

Astronomy

  • Big Bang Theory: Currently accepted theory for the universe's formation
  • Universe's Age: Currently accepted age
  • Formation Evidence: Three pieces of evidence supporting the accepted theory
  • Stellar Evolution Pathways: Factors determining a star's evolutionary path
  • Protostar Formation: Initial force pulling together gas and dust in a stellar nebula
  • Star Ignition: Process in a star's core needed for a protostar to become a star and generate energy
  • Main Sequence Stage: Stage where most stars spend their lives
  • Supernovae: Whether our Sun will become a supernova and the types of stars that do become supernovae
  • Star Comparison: Using the ESRT (Characteristics of Stars Chart) to compare and contrast different stars and groups
  • Stellar Evolution Stages: Early, Intermediate, and Late stages shown on the ESRT
  • Terrestrial vs. Jovian Planets: Distinguishing between these types of planets using the ESRT
  • Kepler's First Law: Shape of planetary orbits, and the location of a focal point in planetary orbits
  • Kepler's Second Law: Difference between perihelion and aphelion, and where orbital velocity is greatest and least
  • Moon Phases: Number of days for the lunar cycle of phases, and determining the next phase from a given phase
  • Moon's Proximity to Earth: Reason why the same side of the moon always faces Earth
  • Lunar Eclipses: Earth, Moon, and Sun alignment, and phases of the Moon during a lunar eclipse
  • Solar Eclipses: Earth, Moon, and Sun alignment, and phases of the Moon during a solar eclipse
  • Eclipse Irregularity: Reasons eclipses do not occur every time the alignment is correct
  • Spring Tides: Earth, Moon, and Sun alignment, and phases of the Moon for Spring tides
  • Neap Tides: Earth, Moon, and Sun alignment, and phases of the Moon for Neap tides

Earth's Motions - Rotation & Revolution

  • Rotation Evidence: Instrument providing evidence of Earth's rotation
  • Wind/Current Deflection: Direction of deflection in Northern and Southern Hemispheres
  • Earth's Rotation Rate: Rate of Earth's movement in degrees per hour
  • Polaris: Star that Earth's tilt always points towards
  • Seasons (Northern Hemisphere): Seasons and corresponding latitude for direct sunlight
  • Path of the Sun: Altitude and intensity related to the season, also the direction the sun rises and sets
  • Altitude & Shadows: Effect of Sun's Altitude on shadow length

Energy

  • Conduction: Medium through which heat travels
  • Convection: Medium through which heat travels
  • Radiation: Medium through which heat travels, also which colors and textures absorb/reflect radiation best.

Climate

  • Latitude's Effect on Temperature: Relationship between latitude and temperature.
  • Elevation's Effect on Temperature: Relationship between elevation and temperature
  • Mountain Barriers Effect: Windward and leeward sides of mountains and associated effects

Meteorology

  • Station Models: Use of ESRT (page 13) for decoding weather stations
  • Isolines: Representation of isotherms and isobars.
  • High vs. Low Pressure Systems: Identifying features associated with high and low pressure
  • Moisture/Humidity: Using ESRT (page 12) to understand dew point, relative humidity, wet-bulb temperature, and differences between air temperature and dewpoint.
  • Winds: Closer isobars indicating a higher wind gradient

Greenhouse Effect & Global Warming

  • Greenhouse Gases: Three major greenhouse gases
  • Atmospheric Zone: Location of greenhouse gases in the atmosphere
  • Incoming & Outgoing Radiation: Types of radiation received and emitted by Earth's surface
  • El Niño and La Niña: Changes in wind direction and sea surface temperatures
  • Ozone Depletion: Gas that blocks UV radiation and atmospheric zone for highest concentration

Monsoons

  • Seasonal Variations: Determining whether a monsoon is wet/dry and associated pressure systems

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Description

Explore the relationships between Earth, the Sun, and the Moon. This lesson covers topics such as tides, the Foucault pendulum, the Coriolis effect, axial tilt, seasons, and equinoxes. Learn about how these phenomena shape our planet and its environment.

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