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Exam 1: Introduction to Earth

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Question 31

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The northern hemisphere's vernal equinox occurs on September 23.

A) True
B) False

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Question 32

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________ is the deepest spot in the ocean.

A) The Hudson Canyon
B) The Grand Canyon
C) The Mariana Trench
D) The middle of the Atlantic Ocean
E) Just offshore of California

F) All of the above
G) A) and B)

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Question 33

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Earth's axis is tilted ________ degrees from a line perpendicular to the Plane of the Ecliptic.

The fact that at any time during the year, the Earth's axis is parallel to its orientation at all other times is called its parallelism, or ________.

The Plane of the Ecliptic is the same thing as the perihelion.

Previous to the 1880s, the United States had more than 20 time zones.

The cause of Earth's seasons is the

When the circle of illumination just touches the Arctic Circle and the North Pole is dark, the date is closest to

The best scientific guess is that there are a few hundred suns in our galaxy.

In the Northern Hemisphere, days become continually shorter after March 22.

At one time, several nations had their own separate prime meridians.

Draw and label a diagram showing Earth/Sun relationships which cause seasonality; explain the diagram.

The geographic grid line 180 degrees of longitude from the Prime Meridian is the ________.

The network of intersecting parallels and meridians over the entire Earth is known as the ________ .

The perihelion is during the month of

The Prime Meridian was adopted as a result of an international conference in 1884.

A(n) ________ is a vertical piece of metal on a sundial.

Time zones are universally divided into zones of 24° longitude.

At the Equator (0°) , a given point on Earth's surface travels about ________ kilometers per hour.

Magellan's expedition--the first to go around the world--found that their log was incorrect by one day. This was because the world had yet to adopt the International Date Line.