Answers
Answer:
Cleavage of a mineral is defined as the direction along which the mineral breaks over the flat mineral surface. It is directly dependent on the mineral's crystallographic structure.
Slaty cleavage refers to the cleavage that is commonly found in the low grade metamorphic rock slate. Here, the fine grained minerals are so closely spaced and the lines of weakness are all parallel to each other, that allows the minerals to break in fine and thin layers. During the time of formation of slate, the smaller fractures are formed due to the increasing pressure. When groundwater moves through these fractures it forms a weak zone due to which these slaty cleavage forms.
When the rocks undergoes deformation and changes in the pressure and temperature condition then the cleavages are formed on the mineral's surface. The calcite contains rhombohedral cleavage are considered to be the perfect cleavage. Whereas the cleavage in amphibole is uneven and comprised of two directions that intersect each other at 56° and 124°.
Related Questions
Question 4 1 pts Which of the following is correct about subduction zones (areas where subduction is happening)? (Check all that apply.) Subduction zones are areas of frequent earthquakes. Subduction zones occur at ocean trenches. Lines of volcanoes called volcanic arcs form near subduction zones. The sea floor spreads at subduction zones.
Which is an example of a primary source? O a letter O a magazine article O a textbook O an encyclopedia
Name the polar and tropical air masses that affect U.S. weather. Describe the pattern of movement across the continent and patterns of precipitation associated with warm and cold fronts.
What is the absolute location of the Pacific Hinge region?
Answers
Answer:
"Three main approaches for conducting research using concept maps as a tool emerged: relational, cluster, and word frequency. These approaches are included in the different phases of research process such as data collection, analysis, and presentation."
source from: www.tandfonline.com
Is this a good answer?
Answers
Final answer:
To calculate the noon sun's angle above the horizon at Placerita Canyon, identify today's date and find the corresponding solar declination using the analemma. Next, calculate the arc distance (AD) by subtracting this declination from 34°N, and finally subtract the AD from 90° to get the solar altitude (SA). This gives you the sun's angle above the horizon at noon.
Explanation:
To calculate the angle of the noon sun above the horizon at a location of approximately 34°N latitude, given that the solar altitude (SA) is 90º minus the arc distance (AD). Start with the latitude of 34°N. Identify today's date and find the corresponding declination of the sun using the analemma. Subtract this value from 34°N (or vice versa depending on which is greater) for the AD. Finally, subtract the AD from 90° to get the SA.
For example, if today's declination of the sun was 23°N: AD = 34°N - 23°N = 11°, then SA = 90º - 11º = 79º. So, at noon the sun would be 79 degrees above the horizon at Placerita Canyon if today's date corresponds to a declination of 23°N.
Learn more about Solar Altitude Calculation here:
#SPJ2
Answer:
The latitude at which the noon sun is directly overhead is defined as the sun's declination. For example, if the sun appears directly overhead at 20°N latitude, the sun's declination is thus 20°N. Figure 7-3, known as analemma, shows the declination of the sun throughout the year. Thus, if you would like to know where the sun will be directly overhead on September 20, you can look on the analemma and find that it will be at 1°N. Given the declination, the noon sun angle at a particular latitude on any given day can be calculated.
Figure 7-3. The analemma, a graph illustrating the latitude of the overhead noon sun throughout the year.
Figure 7-4 shows that for each degree of latitude that the place is away from the latitude where the noon sun is overhead (declination), the angle of noon sun becomes one degree lower from being vertical (or 90°) above the horizon. Noon sun angle for any given latitude on any given day can be calculated using the following equation:
Noon Sun Angle = 90° - (Latitude +/- Declination)
In this equation, use " - " when the latitude and declination are on the same hemisphere and use " + " when they are on the opposite hemispheres. For example, on April 11, the declination is 8°N, the noon sun angle at Springfield, Illinois (40N) on April 11, therefore, should be 58° (90° - (40°N - 8°N).
Figure 7-4. Noon sun angle calculation. The example in this figure illustrates how to calculate the noon sun angle for a city 40° north of the equator (like Springfield, Illinois) on December 22.
Questions
Based on Figure 7-3, the sun shifts its position between which two important latitudes (find the terminologies for these two latitudes in Fig. 7-4). (2 points)
Using the analemma (Fig. 7-3), determine the declinations on each of the following dates. (6 points)
August 10 _________________
September 21 _______________
June 21 ______________
October 15 ____________
December 22 ______________
March 21 _________________
Calculate the noon sun angle in Grayslake, Illinois on each of the dates listed below. (6 points)
Noon Sun Angle in Grayslake on
August 10 _________________
September 21 _______________
June 21 ______________
October 15 ____________
December 22 ______________
March 21 _________________
Obtain the average temperature in Grayslake on each of the dates listed below using a weather station online. (6 points)
Average Temperature in Grayslake on:
August 10 ________________
September 21 _______________
June 21 _____________
October 15 ____________
December 22 ______________
March 21 _________________
Plot the noon sun angle and temperature on each of the dates you obtained in Questions 3-4 on the graph provided below and connect your temperature and noon sun angle plots using smooth lines. Discuss the relationship between noon sun angles and average temperature in Grayslake throughout the year based on your graph. Use the right vertical axis to show temperature variation from -30° F at bottom and +105° F on top (label temperature value at equal amount interval in between: 2 units for every 5°F). Use the left vertical axis to show noon sun angle, with 0° at the bottom and 90°F on top (label noon sun angle value at equal amount intervals in between: every 3 units per 10°). (4 points)
J F M A M J J A S O N D
Months
Figure 7-5. Variation of temperature and noon sun angle in Grayslake.
brief paragraph summarizing the yearly movement of the overhead noon sun and how the intensity of insolation aries in Grayslake throughout the year. (2 points)
Calculate the maximum, minimum, and average noon sun angles at the place in Grayslake. Show your calculations. (3 points)
Maximum noon sun angle:
Minimum noon sun angle:
Average noon sun angle:
When the noon sun is directly overhead a ship in the Pacific Ocean on October 16, the ship's latitude is _____________. Explain your answer. (2 points)
Answers
Answer:
Please post question under mathematics category
Explanation:
Does not belong in geography.
Answers
Answer:ocean space
Explanation:
Answers
Answer:
Power per unit area released by the Sun is 73,488,384 Watt per meter square.
Explanation:
The Sun has an average surface temperature of approximately,T= 6000 K
The power per unit area released by the surface of the Sun be P'
Stefan-Boltzmann Law is given as:
where
Stefan-Boltzmann constant
T = Absolute temperature of the body
Power per unit area released by the Sun: