Card Set Information
Chapters 8, 9, 10, 11
The narrow band across the celestial sphere in which the planets appear to move is called the ecliptic
The greater the magnitude, the brighter the star
More massive stars tend to use up their supply of hydrogen more rapidly than less
When a star exhausts its supply of hydrogen fuel, it becomes a supernova
Red giants are enormously bright because they are extremely hot
A star with the mass of the sun or less will end its life cycle as a
cold lump of carbon
The difference in brightness between two stars is related to
All of these; the amount of light and energy produced by the stars, the relative size of the stars, and the distances between the stars
Which of the following depends on your location on the earth?
The earth rotates
From west to east
If the density of the universe is less than a critical value, then
It will go on expanding forever
The expected life span of a star the size of the sun is
10 billion years
Compared to a star like the sun, a blue-white star
All of these above; is more massive, has a higher surface temperature, and burns its fuel at a greater rate
The eventual fate of our sun is to become a
The different shapes of galaxies are today recognized as
a result of the conditions under which they formed
Most of the stars plotted on a H-R diagram are
Main sequence stars
The elements heavier than iron in the earth were formed by the supernova explosions
of other stars
Venus, the sister planet to the Earth, has an atmosphere whose composition is similar to that of Earth
The channels observed on Mars through a telescope are evidence that liquid water
once flowed on its surface
The density of the planet Saturn is so low that it would float in water
A comet's tail trails behind it throughout its journey through the solar system
Which of the following has properties of a terrestrial planet?
Which of the following is true about the surface of Mars?
It is much too cold for liquid water to exist
Which planets do not have at least one moon?
The first and second planet out from the sun
Most of the mass of the solar system is found in
The smallest planet in the solar system is
The atmosphere of Venus is predominantly
Remnants of asteroids or comets that survive the trip through the earth's atmosphere to strike the surface are called
Which of the following about Jupiter is
Because Jupiter is mostly hydrogen, it is only slightly more massive than the earth
The average temperature of the earth is slightly lower in January because then the earth is at its greatest distance from the sun
On the summer solstice, the sun rises south of due east, and sets south of due west
As viewed from space above the North Pole, the earth rotates clockwise
The Julian calendar adjusted for the fact that the earth's year is not exactly 365 days by adding a day every fourth year
The findings from the
space missions to the moon support the idea
that the moon is believed to have orgininated from the impact of Earth with a very large object
During which month of the year does the earth receive the greatest average energy from the sun?
How frequently does the sun appear directly overhead in Mexico City (≈20° N latitude)?
twice a year
The slow wobble of the earth's axis is called
An apparent solar day is
all of these; the interval between two consecutive solar noons, slightly longer than a sidereal day, rarely exactly 24 hours long
Evidence that the earth is rotating is provided by
the motion of a pendulum
If your favorite constellation rose at 8:00 PM one night, when would it rise two weeks
around 7:00 PM
North of the Tropic of Cancer, the sun appears directly overhead at noon
South of the Antarctic Circle, the sun appears
above the horizon all day at least once during December
In the time 9:00 AM, the "AM" means
before the meridian
During which phase of the moon would a solar eclipse occur?
Without condensation nuclei, a cooling air mass can become supersaturated
Clouds that are gray have larger water droplets than do white clouds
Raindrops in a summer rainstorm may have actually started as ice crystals at high
When a warm air mass advances over a mass of cooler air, towering cumulus clouds form, often resulting in thunderstorms
After the eye of a hurricane passes over you, thunderstorms and high winds resume, but now blowing in the opposite direction
How does the average amount of water that returns to the oceans by precipitation compare to the water that leaves by evaporation?
Evaporation is greater than precipitation
Which of the following is
considered to be a form of precipitation?
When water vapor in the atmosphere condenses to liquid water,
a cloud forms
Which cloud type is usually associated with the arrival of a cold front?
A warm front forms when
a warm air mass advances over a mass of cooler air
A cyclone is centered about a
region of low pressure
Longer periods of drizzle, rain, or snow are usually associated with which cloud type?
A condition that lifts a parcel of air to form cumulus clouds is
any of these; differential heating, mountain barriers, a cold front
Brief periods of showers are usually associated with which cloud type?
Most of the great deserts in the world are located
30° north or south latitude
The greatest use of fresh water in the United States is for industrial purposes
Rain that falls in eastern Colorado eventually ends up in the Atlantic Ocean
The water that evaporates from lakes and streams is fresh, whereas water evaporating from
the oceans is salty
Ocean waves transport objects that float toward the shore
Waves "break" as they approach a shore due to the friction between the
bottom and the wave
Of the total water supply, the amount that is available for human consumption and
less than 1%.
Compared to the amount of surface water, the amount of water stored in groundwater is
roughly 30 times as great
The average daily water use in the United States amounts to about how many liters per day?
A watershed is
the land area drained by a stream
A layer of heavy clay after a rain would be
Quite porous, but not very permable
The Gulf of Mexico is a shallow sea of the
The two most common ions in seawater are sodium and
The average salinity of the earth's oceans is about
The characteristics of ocean waves are influenced by
all of these; wind speed, length of time the wind blows, the fetch
A current that moves parallel to the shore in the surf zone is called a