A (Blank) ia a well-tested and widely accepted view that best explains certain scientific observations.
State the problem, gather information, form a hypothesis, test, form a conclusion.
All of the following are possible steps of the scientific investigation.
A (Blank) system is one in which energy moves freely in and out, but no matter enters or leaves the system.
Which carbonate mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?
Gold has the highest density
A cubic centimeter of quartz, olivine, and gold weighs 2.5, 3.0, and 19.8 grams repectively. This indicates that (Blank).
The strong tendency of certain minerals break along smooth, parrallel planes is known as (Blank).
Crystalline, Chemical composition, Physical properties
Which one of the following is not true for minerals? (whats true about them)
Mineral content, Climate, and Topography
Which of these factors influence the type and rate of weathering?
A (Blank) cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers.
If you were to examine the profile of a typical river, you would probably find that the gradient is (Blank).
Rapids and Whitewater
(Blank) are characteristics of downcutting streams and a youthful stage of valley evolution.
The design of the structture, Intensity of the earthquake, and the nature of the surface.
The ammount of destruction caused by earthqake vibrations is effected by (Blank).
The position on earths surface directly above the earthquakes source is called the (Blank).
Arrival time of P and S waves
The distance between a seismological recording station and the earthquake source is determined from the (Blank).
(Blank) was an ancient reptile that lived in South America and Africa during the late Palezoic.
In the early part of the 20th century, (Blank) argued forcefully for continental drift.
Convection of heat from the mantel to the asthenosphere.
Which of the following energy sources is thought to drive the lateral motions of earths lithosperic plates?
Identify a mechanism for the plates moving
The continental drift hypothesis was rejected primarily because Alfred Wegner could not (Blank).
Shield valcanoes over a hotspot
Which most accurately describes the volcanoes of the Hawaiian Islands?
The way the plates move realtive to each other.
A transform plate boundary is characterized by (Blank).
Mt. St. Helens
In 1980, (Blank) was the first cascade range valcano to erupt since Mt. Lassen in 1915-1916.
Temperature of the magma content, and dissolved gases.
Which of the following factors help determine whether a volcanic eruption will be violently or relatively quiescent?
High viscosity, and gas content
(Blank) tend to increase the explosive potential of a magma body beneath a volcano.
Rock is less dense when its melted
Magma tends to rise toward Earth's surface principally because (Blank).
Circum atlantic belt "Ring of Fire"
Most of the active volcanoes on Earth are located in a belt known as the (Blank).
Which stress situations result in folding of flat-lying, sedimentary strata?
The (Blank) are a geologically old mountain range folded and deformed during Paleozoic.
The subdivision of the geologic time scale that represents the longest time span is called an (Blank)
Law of Superposition
What fundamental concept states that in a horizontal sequence of conformable sedimentary strata, each higher bed is younger thand the bed below it?
What of the following refers to the investigative process by which geologists identify and match sedimentary strata and other rocks of the same ages in different areas?
Sediments derived primarily from the products of weathering on the continents are called (Blank).
Southern hemisphere has more water
Concerningthe ditribution of land and water on Earth, which statements is true?
Rivers carrying salt to sea, and volcanoes out gassing
The dissolved materials in seawater are thought to originate from chemical weathering of rocks on the continents and also from (Blank).
Evaporation and precipataion
Salinity in the ocean is highest in regions where (Blank) is high and (Blank) is low.
Because of the Coriolis effect, surface ocean currents are deflected to the (Blank) of their path of motion in the Northern Hemisphere.
Dust reflects sunlight, creates optical effects, and makes condensation and clouds
With which is dust in the atmoshpere associated?
Drops .5 degrees
On the average, for every 1 km increase in altitude in the troposhpere, the air temperature (Blank).
The storage of heat in the lower layer of the atmosphere produced by certain heat absorbing gases is called the (Blank) effect.
The cloud form that is best described as sheets or layers that cover much or all of the sky is termed (Blank).
The cloud form that consist of globular cloud masses that take on a billowy or "cauliflower-like" structure is called (Blank).
High clouds that form delicate veil-like patches or extended wispy fibers are termed (Blank).
Air can't hold anymore water vapor so it must condense to liquid.
The dew point is the temperature at which...
The term (Blank) is used to describe the conversion of a solid directly to a gas, without oassing through a liquid state.
Counter-clock-wise towards the center
In the Northern Hemisphere, the winds associated with a low pressure system (cyclone) blow (Blank).
They happen in the spring, in the mid-west, and form under cumulonimbus clouds
Which one of the following statements is true of tornadoes?
Patterns or configurations of stars named in honor of mythological characters are called (Blank).
We rotate at exactly the same rate
We only ever see one side of the Moon facing Earth because (Blank).
Gravity and Inertia
The planets stay in orbit around the Sun because of a balance between (Blank) and (Blank).
The (Blank) explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.
As the solar system was forming (Blank) came closest to undergoing nuclear fusion and becoming a second Sun.
(Blank) are small, extraterrestrial particles that glow brightly and burn up as they travel through Earth's atmosphere.
The only planet in the solar system whose axis of rotation lies close to its equatorial plane is (Blank).
The Doppler effect
To determine whther a celestial is approaching or receding Earth, astronomers employ (Blank).
In the case of light, when source is moving away, its light appears (Blank) than it actually is.
Visible light emitted from the clestial bodies is only a small part of an array of energy called (Blank) radiation.
The Red-Shift Theory
The discovery that the universe appears to be expanding led to a widely accepted theory called (Blank).
A star in which light cannot escape because of the immense gravitational pull at its surface is called a (Blank).