Exam 1: Introduction to Earth

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Which of the following distances is CLOSEST TO the actual distance associated with one degree of latitude?

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At times, latitudes higher than __________ degrees can have 24 hours or more of continuous darkness.

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Of the following, which is a great circle?

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The first nearly correct measurement of the Earth's circumference was made by ________.

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Near the North Pole, one degree of latitude extends_________ kilometer(s) on the ground.

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The________ is the name of the orbital plane on which the Earth revolves.

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An equinox has the property of

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How many time zones are contained within Alaska?

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If the axis of the Earth was not tilted, Earth would not experience _________ .

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The cause of Earth's seasons is the

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The closest position taken by the Earth relative to the Sun is_________ million kilometers.

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Our earthly grid system is also referred to as a _________and consists of lines of latitude and longitude.

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The acceptance of of a theory or hypothesis is based on

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The solar system's outer planets are most likely composed of _______.

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The equinox of the southern hemisphere takes place when the vertical rays of the sun cross the Equator on the journey southward.

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The Milky Way is one of, at least,________ galaxies in the Universe.

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The amount of time the Earth takes to revolve around the Sun is most properly known as a(n)

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While the United States spans six time zones, Russia is spread over ________time zones.

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At the Equator, one degree of latitude is approximately equal to

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The Sun is a star in the_________ galaxy.

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