Oceans Ch 1
Place the descriptions of earth's mass extinction events in order, with the oldest event at the top and the most recent event at the bottom.
1. About 96% of all life on earth went extinct during this extinction event. 2. About 50% of earth's species went extinct as a result of this event. 3. This event killed off the dinosaurs as well as many other species.
Rank the locations or reservoirs of earthms water in order from largest quantity of water held to the top to least quantity of water held at the bottom
1. Oceans 2. Ice caps 3. Groundwater 4. Freshwater lakes 5. Atmosphere
Rank the five parts of the world's oceans from largest at the top to smallest at the bottom.
1. Pacific 2. Atlantic 3. Indian 4. Southern 5. Arctic
There are ___ degrees of longitude east and west of the prime meridian to the international date line.
180
The hypsographic curve indicated that o my ___ percent of earth's surface is above sea level
29
Which of the following are true regarding a great circle?
A great circle connecting any two points on earth's surface defines the shortest distance between them. All longitude lines form great circles. They include any circle on earth's surface with its center at earth's center.
Residence time is the avg length time that ___
A water molecule spends in any one reservoir
The most probable (original) sources of the water in the earth's ocean are _____.
Continual addition kf water from outer space. The earths mantle, some of which is brought to the surface through volcanoc activity.
Match the type of matter to the correct description
Dark matter - this is thought to make up about 24% of all energy in the universe and does not interact with light. Normal matter - this kind of matter is found in atoms and the world around us, making up only about 5% of the energy in the universe. Dark energy - this is thought to make up about 71% of all energy in the universe and to be causing he expansion of the universe.
The length of time that a given water molecule spends in any one of earth's water reservoirs is called its
Residence time
Old maps are accurate in their north and south depictions of earth's surface, but many are badly distorted by their east and west dimensions of geographic forms. This is because ___
Sailors have been able to calculate latitude since ancient times.
It is necessary to know the time of day and the position of the sun or the stars relative to one's longitude line because ____
The longitude line rotates with earth, 360 degrees in twenty-four hours
Which of the following are types of evidence that support the presence of oceans on two of jupiters moons?
There are induced magnetic fields around both moons, indicating that they both consist partly of strongly conducting material, such as seawater. The surfaces of the moons are ice covered, but heat is generated by friction from jupiters strong gravitational force.
During the winter solstice for the northern hemisphere, the sun is directly overhead at which of the following locations?
Tropic of capricorn
Greenwich mean time is also called ___ time as well as ___ time
Universal/ZULU
The two natural periods of time caused by the movement of earth are the ___ and the ___
Year and day
When the sun is at its ___, it is at the highest elevation above a reference longitude.
Zenith
The 180 degree longitude line approximates the ___
International date line
