Seasons and Milankovitch

Which variable of the Milankovitch Cycles is animated here?

• eccentricity

• obliquity

• precession

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Milankovitch

Which variable of the Milankovitch Cycles is animated here?

• eccentricity

• obliquity

• precession

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Milankovitch

Which variable of the Milankovitch Cycles is animated here?

• eccentricity

• obliquity

• precession

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Milankovitch

If you decrease the axial tilt of the Earth, what will happen to the seasons?

• milder summers and milder winters

• hotter summers and colder winters

• cold summer and cold winters

• extreme summers and extreme winters

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Milankovitch

According to the data, what should be happening to Earth's climate?

• Earth's climate should be cooling.

• Earth's climate should be warming.

• Earth's climate should not be changing.

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Milankovitch

Which of the following best describes the tilt of the earth during the spring and fall equinoxes?

• The earth is tilted away from the sun (Northern hemisphere)

• The earth is tilted neither toward or away from the sun (tilt is side to side)

• The earth is tilted toward the sun (Northern hemisphere)

• The earth is not tilted during spring and fall

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Seasons

The diagram below indicates regions of daylight and darkness on Earth on the first day of summer in the Northern Hemisphere. Four latitudes are labeled A, B, C, and D. What location receives the least intense insolation and hours of daylight?

• A

• B

• C

• D

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Seasons

Which change in seasons occurs in the Northern Hemisphere at position D?

• Winter is ending and spring is beginning.
• Spring is ending and summer is beginning.
• Summer is ending and fall is beginning.
• Fall is ending and winter is beginning.

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Seasons

Base your answers to questions 28 through 30 on the diagrams below and on your knowledge of Earth science. The diagrams, labeled A, B, and C, represent equal-sized portions of the Sun’s rays striking Earth’s surface at 23.5° N latitude at noon at three different times of the year. The angle at which the Sun’s rays hit Earth’s surface and the relative areas of Earth’s surface receiving the rays at the three different angles of insolation are shown. As viewed in sequence from A to B to C, these diagrams represent which months and which change in the intensity of insolation?

• December → March → June; and decreasing intensity
• December → March → June; and increasing intensity
• June → September → December; and decreasing intensity
• June → September → December; and increasing intensity

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Seasons

As the angle of light decreased (when you started to angle the flashlight closer to the paper) what can be inferred about the temperature?

• As the angle decreased, the temperature would stay the same.

• As the angle decreased, the temperature would increase.

• As the angle decreased, the temperature would decrease.

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Seasons