Oceanography Test 1

The Artic and Antarctic circles are displaced how many degrees from their respective poles?

23.5 degrees

A time zone is approximately how many degrees wide?

15

The planet Mars is the first, second, third, fourth, or fifth planet from the sun?

fourth

During the Northern Hemisphere's summer solstice, then stands above where?

23.5 degrees North

The Tertiary Period belongs in the what Era?

Cenozoic

This ocean has the shallowest average depth

Atlantic

T/F: The earth turns westward as it rotates on its axis

False

T/F: The residence time of water in the atmosphere is equal to the residence time of water in the oceans

False

T/F: According to Geologic Time, we are living in the Cenozoic Era and in the Quaternary Period

True

T/F: If the axial rotation of the earth slowed, the day-to-night temperature variation on the earth's surface would decrease

False

A very high mountain range is about 10,000 meters. On a scaled-down earth model 1 meter in diameter, where 1 meter = 12, 756 kilometers, this point would be about of about how many millimeters in elevation?

.8 millimeters

A Mercrator map shows greatest distortion where?

at high latitudes and the poles

T/F: The hydrologic cycle on earth has an excess of evaporation on land when compared to the precipitation

False

The densest plnaets found in the solar system are where?

near the sun

The area north of 66.5 degees North is in darkness when the sun is directly where?

over 23.5 degrees South

The mean surface temperature of the Earth is about where?

16 degrees Celsius

Longitude is given in degrees where

East and west of the prime meridian

The Tropic of Capricon is at what degrees latitude?

23.5 degrees South

T/F: Radiometric dating is based on the rate at which a radioactive isotope decays

True

The 3rd largest planet in the solar system is what?

Uranus

The average sphere depth of the oceans is about what?

2,700 meters

T/F: All latitude circles are great circles

False

These 2 planets do not revolve on the same plane around the sun, as do other planets

Pluto and Neptune

Water covers about how much percent of the earth's surface

71%

The sun stands directly above the equator how many times?

twice a year

An area drawn on a hypsographic curve equates to what?

a volume of land or water

The average depth of the oceans is about what?

3,800 meters

Which circle of latitude or longitude has the smallest circumference?

80 degrees South

T/F: The middle latitudes in the northern hemisphere have about equal areas devoted to both land and water

True

Relationships between oceanic depths or land elevations and the earth's area are shown on a what?

hypsographic curve

How many hours must be added to New York City's Eastern daylight time to obtain Greenwich Mean Time?

+5

Out of a 100g sample of K-40 (1.3 billion years = half life), how many grams of Argon-40 exist after 4 half-lives

94 g

T/F: The Milky Way Galaxy contains about 200 million stars

False

T/F: Determination of latitude requires that time be kept very accurately

False

The age of the earth is estimated at about how many years?

4.6 x 10^9 years

T/F: When crossing the International Date Line from east to west, time increases by 2 hours

False

The mean radius of the earth is about how many meters?

6.371 x 10^6

The earth turns on its axis about how many degrees/time?

1 degree in 4 minutes

Oceans provide Earth with the greatest amount of water. The second largest amount of water is found where?

Glacial and other land ice