(Q001) Which of the following is accurate about Louis Agassiz?Group of answer choicesHe stated that there are changes in the amount and distribution of insolation received on the Earth.He stated that there are cyclical changes in the Earth's orbit and axial tilt.He stated that the presence of erratics in Europe was due to large continental ice sheets.He offered ideas that explain the timing of ice-age events but not the severity of temperature change associated with ice ages.

A: It has been extremely difficult for scientists to identify the causes of glaciation because most iceages occurred millions of years ago and left behind little geologic record.B: Some scientists have noted similarities between long-term and short-term climatic cycles of thePleistocene.C: Changes within the Sun itself are known to have a major influence on the amount of solarradiation received at any given latitude on Earth.D: Long-term glaciation is most likely caused by the movement and interaction of Earth's plates.E: The Milankovitch theory uses variations in Earth's rotation and orbit to explain the cyclicoccurrence of glacial periods that last tens to hundreds of thousands of years.F: Volcanic activity and variations in solar energy have been proposed but not established ascauses of climatic events that are hundreds of years long. It has been extremely difficult forscientists to identify the causes of glaciation because most ice ages occurred millions of years agoand left behind little geologic record.

A particularly interesting hypothesis for intermediate-term climatic events was putforward by the Serbian astronomer Milutin Milankovitch during the 1920s. He proposed that minorirregularities in Earth's rotation and orbit are sufficient to alter the amount of solar radiation theEarth receives at any given latitude, and hence can affect climatic changes. Now called theMilankovitch theory, the hypothesis was initially ignored but has received renewed interest duringthe past 20 years.4. According to paragraph 4, the Milankovitch theory proposes which of the following?A: Climatic change occurs when irregularities in Earth's orbit and rotation take place at the sametime that the amount of solar radiation reaching the Earth decreases.B: The amount of solar radiation reaching Earth at any given latitude varies throughout the year,causing climatic change.C: Slight variations in Earth's orbit and rotation can affect the climate by changing the amount ofsolar radiation received by Earth at any given latitude.D: Climatic change occurs when changes in the amount of solar radiation received by Earth aregreat enough to alter Earth's orbit and rotation

Paragraph5: Milankovitch attributed the onset of the Pleistocene Ice Age to variations in threeparameters of Earth's orbit. The first of these is orbital eccentricity, which is the degree that Earth'sorbit departs from a perfect circle in its orbit around the Sun. The orbit varies from nearly a circle toan ellipse (an oval-shaped, elongated circle) and back again in about 100,000 years. Thiscorresponds closely to 20 warm-cold climatic cycles that occurred during the Pleistocene. Thesecond parameter is the angle between Earth's axis and a line perpendicular to the plane of theecliptic (the path along which the Sun appears to move). This angle shifts about 1.5 degrees duringa 41,000-year cycle. The third parameter relates to another complicated movement pattern with a23,000-year cycle. Milankovitch proposed, and now many scientists agree, that the interaction ofthese three parameters provided the triggering mechanism for the glacial-interglacial episodesduring the Pleistocene.5. The word “this” in the passage refers toA: the variation in three parameters of Earth’s orbitB: the amount of time it takes for Earth to orbit around the SunC: the length of the Pleistocene AgeD: the variation of Earth’s orbit from a circle to an ellipse and back to a circle

Which of the following has NOT been a natural cause of variation in Earth's climate over the past 800,000 years?Responsesvariance in the obliquity of Earth's orbit around the sunvariance in the obliquity of Earth's orbit around the sunvariance in glacial ice formationvariance in glacial ice formationvariance in the eccentricity of Earth's orbit around the sunvariance in the eccentricity of Earth's orbit around the sunvariance in the concentration of chlorofluorocarbons in the Earth's atmospherevariance in the concentration of chlorofluorocarbons in the Earth's atmosphere

Which of the following is evidence of Earth’s revolution?Group of answer choicesNight and dayThe Foucault pendulumConstellation movementThe Coriolis effect