Basalt is a fine-grained mafic igneous rock. It is commonly vesicular and aphanitic.
The pace at which the melt cools determines whether an igneous rock has a fine- or coarse-grained texture: slow cooling allows for the formation of massive crystals, whereas quick cooling results in microscopic crystals. Based on their chemical makeup, igneous rocks may be categorised into four groups: felsic, intermediate, mafic, and ultramafic. Figure 7.6's representation of Bowen's reaction series demonstrates how variations in an igneous rock's chemical composition correspond to variations in its mineral content. Since the crystals are too tiny to view without a magnifying glass, igneous rocks that are formed on the surface of the earth have a highly fine-grained structure.
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Create a list of at least 10 pros and cons of removing obsolete oil rigs from the continental shelf
By removing only the upper portion of the structure that is floating on water, oil companies can convert the rigs into reefs instead of removing the oil and gas platforms.
The industry is able to save millions of dollars annually because reefing is less expensive than the entire process of removing rigs.
The Benefits and Drawbacks of Working on an Offshore Oil Rig Excellent Salary Structure...
Con: Long working hours.Pro: Extended Time Off...Con: Extended absence from home.Pro: Education and Training...Con: Factor of Danger...Pro: Insurance for health...Pro: Fantastic Opportunities for PromotionWhat drawbacks does oil drilling have?Offshore oil drilling has the following drawbacks.Exorbitant and Possibly Hazardous: Because it requires sophisticated equipment, offshore oil drilling is expensive. Likewise, it presents critical dangers to laborers.Numerous Damages to the Environment: Mass pollution is caused by offshore oil drilling, particularly when oil spills occur.To learn more about Offshore oil drilling here
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Using complete sentences, compare citizens’ rights in Germany, the United Kingdom, and Russia. WILL GIVE YOU 5 STARS
One of the busiest, largest, most crowded cities in the world;
home of the Japanese emperor
Answer: China Pekin
Explanation:
What is the capital city of France?
Answer:
The capital of France is Paris
7. The Amazon rain forest covers approximately 6 million km² in the northern part of
South America. Large portions of this rain forest have been destroyed as result of
lumbering and clearing for farmland. Explain the effect of continued destruction of
this rain forest on the global climate.
The effect of continued destruction of this rain forest is that there are increased storage of carbon which are released into the atmosphere as carbon dioxide (CO2, thus, this is how deforestation and forest degradation contribute to global warming.
What are the attributes of the Amazon Rainforest?The Amazon Rainforest is a large tropical rainforest in northern South America that occupies the drainage basin of the Amazon River and its tributaries and covers an area of 2,300,000 square miles (6,000,000 square km).
It is bounded to the north by the Guiana Highlands, to the west by the Andes Mountains, to the south by the Brazilian central plateau, and to the east by the Atlantic Ocean.
The Amazon River Basin is home to the world's largest rainforest. The basin, which is roughly the size of the 48 contiguous United States, covers roughly 40% of the South American continent and includes parts of eight South American countries.
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Find the surface area and volume of the sphere.Round yours anwers to the nearest whole number.
Volume of sphere is V = (4/3)πr3
Area of the sphere is A = 4πr2.
where r= radius of the sphere
The question is incomplete that is the answer provide is of the question how to find surface area from volume:
The formula for surface area of a sphere is given by SA= 4/3π(r^2) (let us assume this as step 1), while its volume (V) is equal to (4/3)π(r^3) where "r" is the radius of the sphere.
To calculate the surface area for a sphere with a volume of 4.5π cubic meters where π= 3.14 approximately.
Step 2: The radius of the sphere by substituting 4.5π ft^3 for V in the formula in Step 1 to get:
V=4.5π cubic feet.= (4/3)π(r^3)
Step 3: Multiply each side of the equation by 3 and the equation becomes: 13.5π cubic feet =4π(r^3)
Step 4 : Divide both sides of the equation by 4π. Solve for the radius of the sphere.
To get:
(13.5π cubic feet)/(4π) = (4π )(r^3)/ (4π),
which then becomes: 3.38 cubic feet= (r^3)
Step 5: After calculating the value of "r" is 1.50ft
Therefore, putting the value of r in step 1; we get
SA = 4π(1.50^2) = 4π(1.50X1.50) is equal to 9π square ft.
The question is incomplete that is the answer provide is of the question how to find surface area from volume.
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question 10.12: what information can you gain from the spectral profile for vegetation about the ability of vegetation to reflect and absorb energy (that is, what types of energy are most reflected by vegetation, and what types of energy are most absorbed by vegetation)?
Vegetation's spectral characteristics. Chlorophyll regulates the spectral characteristics of vegetation in the visible region of the spectrum.
In vegetation, the reflectance spectrum in the visible area is dominated by light absorption by leaf pigments (400–700 nm). Red and blue (400–500 nm) wavelengths are preferentially absorbed by chlorophyll pigments a and b. Chlorophyll is the photosynthetic component that enables plants to produce carbohydrates by photosynthesis from carbon dioxide and water.
The spectral reflectance of bare soil doesn't vary significantly with wavelength. The slope is influenced by the kind of soil and the amount of surface moisture, and the reflectance increases linearly with wavelength.
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which type of cyclone is the largest in size? a. supercell thunderstorm b. hurricane c. tornado d. mid-latitude cyclone
The correct answer is c. tornado type of cyclone is the largest in size.
The multiple vortex tornado, landspout, and waterspout are a few examples of different types of tornadoes. A massive cumulus or cumulonimbus cloud connected to a spiralling funnel-shaped wind current is what gives rise to a waterspout. People are exposed to risks from extremely strong winds and run the chance of being hit by flying and falling debris during a tornado. The destruction left behind by a tornado increases the chance of harm. While there is nothing you can do to stop tornadoes, there are things you can do to safeguard your safety and health.With the exception of the United States, Canada most likely experiences the most tornadoes. The most often hit regions include portions of the southern Prairies and southwestern Ontario.
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What is the most important physical environmental factor in intertidal communities?
Answer:
rise and fall of tides
Explanation:
rise and fall of tides
what is accurate about the land surface today, that you can observe in places such as pennsylvania? group of answer choices sediment is being deposited in most places, but a few places are eroding. sediment is being deposited everywhere, covering the land surface deeper and deeper. sediment is not being deposited anywhere, and it never has been. sediment is being deposited in a few places, but most places are eroding.
Option C. Sediment is not being deposited anywhere, so everywhere is eroding, The bottom of waterfalls, riverbanks, and deltas are frequent places for silt to collect.
Since sediment is not being deposited somewhere, erosion is occurring everywhere. The rest of the lands of Pensylvania are eroding as a result of silt accumulation in some man-made lakes, natural lakes, caves, and marshes. As the ice sculpts the terrain or melts, glaciers may freeze sediment and then dump it elsewhere. Sediment generated and deposited by glaciers is termed moraine. In dust or sandstorms, wind can blow dirt across a plain.
What is accurate about the land surface today, that you can observe in places such as Pennsylvania?
A) Sediment is not being deposited anywhere, and it never has been.
B) Sediment is being deposited in most places, but a few places are eroding.
C) Sediment is not being deposited anywhere, so everywhere is eroding.
D) Sediment is being deposited in a few places, but most places are eroding.
E) Sediment is being deposited everywhere, covering the land surface deeper and deeper
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Analyze the map of southern Africa below and answer the question that follows.
A topographic map of Southern Africa with labels A, B, C, D, E, and F. A is a river through the Congo. B is a lake near Uganda and Kenya. C is a lake on the border of Tanzania. D is a river near Zambia and Zimbabwe. E is a lake near Malawi. F is an island in the Indian Ocean.
Image by Tom Patterson and Eric Gaba
On the map above, what is the name of landform F?
A.
the Great Rift Valley
B.
the Horn of Africa
C.
the island of Madagascar
D.
the Sahel
Please select the best answer from the choices provided
A
B
C
D
The landform F, given the topographic map of Southern Africa, is C. the island of Madagascar
Where is Madagascar located ?Madagascar is an island nation off of Africa's southeast coast. After Greenland, New Guinea, and Borneo, Madagascar is the fourth-largest island in the world by area.
The majority of the population of Madagascar is linked to Indonesians, who are located more than 3,000 miles (4,800 km) to the east.
The landform labelled F, is said to be an island in the Indian Ocean. As mentioned above, Madagascar is an island located in the Indian Ocean, to the east of Southern Africa.
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when the northern hemisphere is tilted toward the sun, how does this affect the length of our day?
Our planet stays quite close to the same distance from the sun throughout the year thanks to the Earth's hardly elliptical orbit. In fact, during the summer in the Northern Hemisphere, Earth is a little further away from the sun.
The hemisphere that is inclined toward the sun, whether it be the Northern or Southern Hemisphere, receives more direct sunlight. Additionally, the hemisphere slanted toward the sun has more daylight hours than the hemisphere tilted away from it. Hence, the daytime increases.
The hemisphere tilted toward the sun receives more solar radiation and experiences greater temperatures as a result of more hours of daylight and direct sunshine. Summer is experienced between the equator and 90°N (the North Pole) latitudes when the Northern Hemisphere is turned toward the sun.
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The surface of the Earth is made of several tectonic plates that move at a very slow rate. What causes the plates to move?
a. explosions within the Earth's mantle
b. convection currents within the Earth's mantle
c. expansion of the Earth's core pushing on the tectonic plates
d. contraction of the Earth's core pulling on the tectonic plates
Answer: B Convection currents
Explanation:
The Earth’s tectonic plates are constantly moving like giant ‘rafts’ on top of the semi-molten mantle below. However, this movement is slow and rates vary from less than 2.5cm /yr to over 15cm/yr. One explanation for the movement of the Earth’s crustal plates is believed to be convection currents which occur in the semi-molten mantle.
The lengths of two sides of a triangle are 26 meters and 46 meters. What is the range of possible lengths for the third side, x of the triangle. what is x
The possible length for the third side of triangle x = 72. with the possible range of side .
Calculating the side x :Le-the third side be X.
We know that the sum of 2 sides of a triangle must be greater than the third side.
So we can get.
x + 26 > 46 - 1
26 + 46 > x ---------- (2)
and
From => x+26 = 46
=> x> 46-26
⇒ x > 20 ---------- (3 )
From ⇒ 26 + 46 >x
⇒ 72>x
⇒ x < 72
From (3) and( 4) equation we get → 20 < x <72
What is Triangle ?
A triangle is a polygon with three sides and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is represented by equilateral triangle. A triangle is a polygon with three sides and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is represented by triangle ABC. In Euclidean geometry, a unique triangle as well as a unique plane are determined when the three points are not collinear.
Why is it called a triangle?Each polygon has a special name based on the number of sides. For example, "tri" is a prefix meaning "three", so a three-sided polygon is called a triangle. Its name also indicates that this polygon has three angles. The prefix "poly" means many.
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what is the advantage & compact shape
Answer:
small and centralized. it is easily to manage since the government is close to all portions of the state. the state gets easy access to the coast and the local resources around it.
which of the following is not correct regarding the pleistocene? question 74 options: the ohio and missouri river systems marked the southern terminus of continuous ice at its greatest extent. sea levels were 100 m (330 ft.) higher than today. at its height, almost a third of earth was covered with ice.
Option A is correct. Ice age is another name for the Pleistocene epoch. There are numerous accounts of events that followed that contributed to global warming.
One of these is true: the globe began warming 18,000 years ago when it began to emerge from the Pleistocene Ice Age. Despite the fact that sea levels have risen by roughly 300 feet, forests have also returned. Some animal species, like mammoths and mastodons, went extinct. These were the Pleistocene epochs: A geological age known as the Gelasian is thought to have started around 2,588 million years ago and ended about 1,806 years ago.
Which of the following is not correct regarding the Pleistocene?
A) Sea levels were 100 m (330 ft.) higher than today.
B) At its height almost a third of Earth was covered with ice.
C) It began 1.65 mya and had at least 18 glacial/interglacial cycles.
D) The Ohio and Missouri River systems marked the southern terminus of continuous ice at its greatest extent.
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A parallel pattern of rock material found at identical locations on each side of the Mid-Atlantic Ridge reveals rock of the same geologic age and polarity
Answer:
True
Explanation:
That is true
