Flashcards in Chapter 1 - Introduction To Earth Deck (153):
Earth's diameter is closest to ___ km.
The response to earth's rotation is...
The first nearly correct measurement of the earth's circumference was made by...
"Greenwich Mean Time" is also known as...
Universal Time Coordinated
The sun's rays are directly overhead at the ___ on or about December 21.
Tropic of Capricorn
The north end of the earth's axis points towards...
How many degrees of latitude are between the Tropic of Cancer and the Tropic of Capricorn?
The Greenwich Meridian is also known as the...
At the equator, a given point on earth's surface travels about ___ km/hr.
Near the North Pole, one degree of latitude extends ___ km on the ground.
At the North Pole, one degree of longitude extends ___ km on the ground.
The world is divided into ___ standard time zones.
Before time zones were created in the 1880s, one could encounter ___ time standards on a rail trip across the U.S..
More than 20
Of the following, which is a greater circle?
Of the following, which is the first day of spring?
The maximum distance between earth and sun occurs in July and is called the ___.
On June 21, the sun's rays are directly over the...
Tropic of Cancer
The fact that at any time during the year, the earth's axis is parallel to it's orientation at all other times is called its parallelism, or...
Russia contains ___ time zones.
The altitudinal difference between the top of the tallest mountain and the bottom of the deepest ocean trench is CLOSEST to ___ km.
The U.S. Spans ___ time zones.
The closest position taken by the earth relative to the sun is ___ million km.
When the circle of illumination just touched the arctic circle and the North Pole is dark, the date is closest to...
The geographic grid mine 180 degrees of longitude from the prime meridian is the...
Our solar system contains ___ moons revolving around the planets.
More than 100
A cross section of earth cut from pole to pole would reveal which shape?
How many time zones are contained within Alaska?
A ___ separates earth into two hemispheres.
Longitude is divided into multiples of ___ degrees for the purpose of delimiting standard time zones.
Eratosthenes was the first to accurately measure the earth's...
Universal Time Coordinated is also known as...
Greenwich Mean Time
The 0 degree meridian is the same line as the...
A spot on the earth's surface rotates fastest at the...
One degree of longitude equals 0 miles on the ground at the...
The distance of 150 million km is CLOSEST to being...
The average earth/sun distance
The MilkyWay is one of, at least, ___ galaxies in the universe.
The earth/sun aphelion occurs once per year during the month of...
When the sun's rays are directly overhead at the Tropic of Capricorn, it is...
At the time of the aphelion, earth is ___ million km from the sun.
The MilkyWay is a galaxy some ___ light years in diameter.
The solar system's Jovian planets are more likely composed of...
The moon is some ___ km from earth.
In science, the term theory is...
The highest order of understanding
At the International Date Line, there is a change of...
The farthest north the vertical rays of the sun ever reach north of the equator occurs on or about...
Standardization in world time zones dates from...
The earth is 3.3% closer to the sun during the northern hemisphere ___ than when it is farthest away.
On both the spring and fall equinoxes, the sun's rays are vertically overhead at the...
The highest numbered latitude used in the geographic grid is ___ degrees.
Which of the following is a central meridian in the standardized time zone...
15 degrees W
A ___ is a vertical piece of metal on a sundial.
The constant angle between earth's axis and the plane of the ecliptic is called earth's...
The circle of illumination just touches the Antarctic circle on or about...
The acceptance of a theory or hypothesis is based on...
A preponderance of evidence
Numbered meridians are...
The most important physical effect of the earth's rotation is...
The alternation of sunlight and darkness
The solid, inorganic portion of the earth system is known as the...
The size of the universe is best described as...
Vast beyond comprehension
A nebula is...
A cloud of gas and dust.
The surfaces of the inner planets of our solar system seem to be composed of...
The MilkyWay is one of over ___ galaxies in the universe.
After it was part of a nebula and before it was the sun, our sun was a...
Mt. Everest is the tallest mountain on earth and its altitude is closest to ___ m.
The best description of the actual shape of the earth is an...
The earth is one of ___ planets in the solar system.
The earth rotates about its...
Which of the following is NOT defined by latitude?
Which of the following distances is CLOSEST to the actual distance associated with one degree of latitude?
Which of the following best describes the latitude and longitude of North America?
Northern & Western Hemispheres
Suppose you are standing on the standard time meridian of 75 degrees W. Which would be the next standard time meridian to your west?
90 degrees W
Which of the following takes the longest time?
A revolution of the earth
The angular inclination of the earth's axis with respect to a line perpendicular to the plane of the ecliptic is...
At the June solstice, day length varies from ___ hours at the equator to ___ hours at the North Pole.
The perihelion is during the month of...
Which of the following subsystems includes all living things on earth?
Pluto is now classified as a...
The earth's polar and equatorial diameters vary by ___ percent.
The line connecting the points of maximum flattening on earth's surface is called the...
Which of the following is also an entire great circle?
In angular measurement, a minute contains ___ seconds.
At the equator, one degree of latitude is approximately equal to...
One degree of longitude.
The "natural" baseline which serves as a baseline to measure longitude...
Does not exist.
The term "a.m." means...
Before solar noon.
Any standard time zone extends ___ degrees of latitude to the east and west of the central meridian.
An Equinox has the property of...
12 hours of daylight and 12 hours of night at all latitudes.
When the vertical rays of the sun cross the equator on their way northward, the date is known as ___ in the northern hemisphere.
The vernal equinox
A combination of physical and social sciences
One of the inner planets.
The universe is thought to be on the order of ___ billion years old.
Our earthly grid system is also referred to as a ___ and consists of lines of latitude and longitude.
Which of the following is not contained within earth's system of latitude and longitude?
A longitude of 185 degrees E
The cause of the earth's seasons is the...
Polarity of the axis
In NYC, this is the shortest day of the year and the sun is also the lowest in the sky.
At times, latitudes higher than ___ degrees can have 24 hours or more of continuous darkness.
The plane of the ecliptic is...
At an angle from the plane of the equator.
Using a gnomon, one can...
Tell local time.
The Sun is a star in the ___ Galaxy.
The shape of the MilkyWay is similar to a...
The amount of time the earth takes to revolve around the sun is most properly known as a...
___ is considered a dwarf planet.
___ is the deepest spot in the ocean.
To earth people, Polaris is an important star because...
It is a guide for navigation.
The graticule of the earth is also known as...
Latitude & longitude
One can tell it is solar noon by observing...
The length of shadows.
What happened between 4.5 and 5 billion years ago?
The beginning of our solar system occurred.
The word geography comes from the Greek, meaning...
Which of the following is not a major topic taught in a course of introductory physical geography?
The shape of earth's orbit around the sun is an...
The ___ is the name of the plane on which the earth revolves.
Pluto's orbit is in the...
The ___ Equinox of the Southern Hemisphere takes place when the vertical rays of the sun cross the equator on the journey southward.
The "living zone" in the atmosphere extends from earth's surface to an altitude of approximately ___ km.
The origin of the universe is incompletely understood and is called...
The "Big Bang"
Earth rotates on it's rotational axis. A plane at a right angle to and bisecting earth's axis is known as the...
Plane of the equator
Earth revolves around the North Star.
The North Star is also known as Polaris.
Almost all countries in the world base their time on UTC.
The circle of illumination divides the earth into a light and dark hemisphere.
The prime meridian was adopted as a result of an international conference in 1884.
The plane of the ecliptic is the same thing as the perihelion.
The equator is an example of a great circle in the geographic grid.
The vertical rays of the sun take one year to travel from the Tropic of Cancer to the Tropic of Capricorn and back to the Tropic of Cancer.
The northern hemisphere's vernal equinox occurs on September 23.
The Tropic of Cancer is an example of a great circle.
The plane of the equator and the plane of the ecliptic are the same thing.
The earth's circumference is close to 40,000km.
In the northern hemisphere the longest day of the year is at the vernal equinox.
The shortest distance between the earth and the sun during the year is approximately 147 million km.
The northern hemisphere's shortest day of the year is at the autumnal equinox.
At the equator, the sun's rays at noon strike the earth at an angle of 90 degrees above the horizon twice each year.
On December 22, all areas inside the Antarctic circle are in daylight for a full 24 hours.
The earth year's length of 365.25 is known as the perihelion.
At the North Pole, the speed of rotation of the earth is 0 km/hr.
Larger angles of solar incidence concentrate solar energy in smaller areas of earth's surface.
The international date line and the 180th meridian are the same line.
There are 24 minute for each degree of latitude.
At one time, several nations had their own prime meridians.
There is a parallel or meridian for every degree, minute, and second on the globe.
The international date line follows the arctic and Antarctic circles.
The vertical distance between earth's highest mountain and deepest ocean trench is approximately 20km.
The circle of illumination is a small circle.
The lowest point of the sea bottom is approximately 11,000 meters below sea level.
The international date line is in the middle of a time zone.
Russia occupies 3 time zones.
In the northern hemisphere, days become continually shorter after March 22.
The adoption of daylight savings time would be of little value for most nations in the tropics.
All planets in our solar system rotate from east to west.
The sun makes up more than 99% of the mass of our solar system.
When one crosses the prime meridian the time zone does not change.
Our solar system is known as the MilkyWay.
The vertical rays of the sun are present at the arctic circle during the June solstice.
The vertical rays of the sun migrate between 23.5 degrees N and 23.5 degrees S.