Answer:
According to Wegener, all the continents were all one lumped together into one large land mass before they started drifting apart over time over the oceanic bed.
At first, the idea was highly criticized because he never explained "how" they drifted apart, as in what caused the motion, what was behind the drifting. I hope you understand.
The distance between scale markings on the horizontal scale is 100 km. Comparison of the vertical and horizontal scales indicates that the horizontal scale distance between tic marks is ________ times that of the vertical scale.
a.1
b.10
c.100
d.1000
Answer:
c.100
Explanation:
The distance between scale markings on the horizontal scale is 100 km. Comparison of the vertical and horizontal scales indicates that the horizontal scale distance between tic marks is __100_ times that of the vertical scale.
Calculate how many meters of distance are equivalent to 11,700 years, using the metaphor-conversion-factor of 1,000,000 years per kilometer. In other words, if 1,000 meters = 1,000,000 years, how many meters is 11,700 years?
Answer:
11.7 meters
Explanation:
If
[tex]1000m=1,000,000years,[/tex]
let the unknown meters = [tex]x[/tex]
[tex]x[/tex]meters [tex]=11,700 years[/tex]
∴
[tex]1000 * 11,700 = 1,000,000x[/tex]
[tex]11,700,000[/tex] = [tex]1,000,000x[/tex]
Divide both sides by 1,000,000
[tex]\frac{11,700,00}{1,000,000} = \frac{1,000,000x}{1,000,000}[/tex]
[tex]x =[/tex] 11.7 meters
To convert 11,700 years to meters, we need to first convert it to kilometers using the given conversion factor. Then, we can convert kilometers to meters using the conversion factor provided.
Explanation:To calculate how many meters are equivalent to 11,700 years using the given metaphor-conversion-factor, we need to use the conversion factor of 1,000 meters per 1 kilometer.
First, we will convert the given 11,700 years into kilometers by dividing it by the conversion factor of 1,000,000 years per kilometer. This gives us 0.0117 kilometers.
Next, to convert kilometers to meters, we'll multiply 0.0117 kilometers by the conversion factor of 1,000 meters per 1 kilometer. This gives us 11.7 meters.
With increasing distance from an oceanic ridge, the rocks become older. the rocks become younger. the rocks' ages alternate between younger and older. All of the choices; different patterns occur at different ridges.A. TrueB. False
Answer:
Option (1)
False
Explanation:
The mid-oceanic ridge is one of the main features in the divergent plate boundary. Seafloor spreading takes place along this ridge, where the lithosphere becomes thin because of the uprising magma. The magma erupts at the surface forming a ridge which is commonly known as the mid-oceanic ridge.
As the magma melts at this ridge due to the decompression process, it solidifies and forms young basaltic igneous rocks. These are geologically the youngest rocks. With the increasing distance right from the mid-oceanic ridge, the age of the rocks increases.
Thus, the correct answer is option (1).
At this mid-oceanic ridge, when the magma erupts at the seafloor, it is comprised of magnetic minerals, which shows a specific pattern in the orientation of the earth's magnetic polarity. This forms alternate stripes, that starts from the mid-oceanic ridge and eventually expand outward. This pattern of earth's magnetic polarity is found in all the mid-oceanic ridges on earth.
Hence the given statement is false.
Rocks do get older the further you get from an oceanic ridge, due to seafloor spreading and the process of new rock formation at these rift zones, where tectonic activity is most prevalent. This creates a pattern in which the youngest rocks are found closest to the ridge, and the age increases with distance.
Explanation:The statement in the question, 'With increasing distance from an oceanic ridge, the rocks become older.' is true. This pattern is a consequence of seafloor spreading at mid-ocean ridges, which are active rift zones. As tectonic plates pull apart, magma rises to the seafloor, cools, and solidifies to form new rock. Over time, this process pushes older rock further away from the ridge as new rock forms. Plate tectonics and volcanic forces form new terrains and contribute to this cycle, leading to an observable pattern where the age of rocks increases the further you move from the ridge.
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Ancient astronomers typically practiced both astronomy and astrology, but the two are not the same.
1. Classify the following items as belonging to astronomy, astrology, or both.
O Age of Aquarius
O Science
O based on superstition
O records scientific measurements during research
O each person is born under a sign that governs their life
O followos rules made thousands of years ago
Answer:
Age of Acquarius=Astrology
Science=Astronomy
Based on superstition=Astrology
Records scientific measurement during research findings=astronomy
Each person is born under a sign that governs their life=Astrology
Follows rules made thousands of years ago=Astrology
Explanation:
Astrology uses positions and movement of heavenly bodies to generate predictions of earth happenings and human personality characteristics.
Astronomy a natural science that studies heavenly bodies
• What regions of the world tend to have the highest and lowest precipitation rates (compare tropics versus sub-tropics)? How does this impact water distribution, globally?
Answer:
Regions with a higher amount of rainfall are those of equatorial regions and those of the low rainfall are polar areas.
Explanation:
The regions in the tropics and the subtropics receive a significant amount of rainfall while the place at the places receives only 10 inches f rainfall and regions are dry annually with rain occurring only in summer. The tropical areas are those that surround the earth equator and are found 23 degrees north and south. As the sun is usually in direct contact and this region comprise of 40% of the surface area and 35% of the earth's landmass. And remains warm to hot and moist year-round. These regions are characterized by wet season and thus have most of the cyclonic activity through the year and this impacts the global distribution of water as the movement of the warm and cold water stakes form these regions, along with the variation in salinity.What type of coastal management mechanism does Dr. Pilkey believe should be introduced in the long-term?
Answer:
The type of coastal management mechanism that Dr. Pilkey believes should be introduced in the long-term is the beachfront mechanism.
Explanation:
According to Dr. Pilkey, it would be crucial to bring in the local residents of coastal areas in the operations of coastal management so as to cease the activities that cause coastal erosion. He believed for the long-term conversation of coasts, the locals can be trained to implement the beachfront mechanism make the locals take care of their own beaches.What is the relative frequency of direct hits that were AT MOST a category 3 storm? a. 0.3480 b. 0.9231 c. 0.2601 d. 0.3370
Answer:
The question is incomplete. This is the complete question: Use the following information to answer the exercise: The table in the attachment contains data on hurricanes that have made direct hits on the US between 1851 and 2004. A hurricane is given a strength category rating based on the minimum wind speed generated by the storm. What is the relative frequency of direct hits that were AT MOST a category 3 storm.
The answer is b. 0.9231.
Explanation:
The relative frequency for each category can be calculated by dividing the number of hits for each category by the total number of hits, where the total number of his = 273.
The relative frequency for each category is shown in the third column in the table in the attachment.
Using the values of the respective relative frequencies on the third column, and considering AT MOST a category 3 storm―i.e. categories 1, 2, and 3―the relative frequency of direct hits = relative frequency for category 1 + relative frequency for category 2 + relative frequency for category 3 = (109/273) + (72/273) + (71/273) = 0.3993 + 0.2637 + 0.2601 = 0.9231.
The relative frequency of direct hits that were AT MOST a category 3 storm is 0.3480. The correct option is A.
Explanation:The relative frequency of direct hits that were AT MOST a category 3 storm can be calculated by dividing the number of direct hits that were at most a category 3 storm by the total number of direct hits. Let's assume there were 120 direct hits in total and 42 of them were at most category 3 storms. The relative frequency would be:
Relative frequency = Number of direct hits at most category 3 / Total number of direct hitsRelative frequency = 42 / 120Relative frequency ≈ 0.35So, the answer is 0.3480 (option a).
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Distinguish between regional and contact metamorphism. a. Contact metamorphism occurs when chemically active fluids flow through a large region of preexisting rock; regional metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. b. Regional metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes; contact metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. c. Contact metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes; regional metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. d. Regional metamorphism and contact metamorphism both occur when quantities of rock are subjected to high heat and pressure during mountain building, but regional metamorphism affects over a greater area. e. Regional metamorphism occurs when chemically active fluids flow through a large region of preexisting rock; contact metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes.
Answer:
Option c
Explanation:
Regional metamorphisim occurs as a result of tectonic activity and is characterized with low temp and high pressure conditions over a large area while contact metamorphism occurs intrudes existing rocks.
Contact metamorphism is a localized process that involves rock alteration due to intrusion of magma, impacting a relatively small area. On the contrary, regional metamorphism is a large-scale process that transforms rock over a wide area due to tectonic activity and is associated with phenomena like mountain building.
Explanation:The difference between regional and contact metamorphism is due to the conditions under which they occur and the extent of their influence. Contact metamorphism occurs when magma intrudes into the surrounding solid rock body, causing a high gradation of heat and altering the existing rock. This process typically affects a relatively small area surrounding the intrusion.
On the other hand, regional metamorphism involves the transformation of large volumes of rock over a wide geographic area, primarily due to the intense heat and pressure associated with tectonic processes such as mountain building. Therefore, the main difference lies in the scale and conditions of the metamorphism process.
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Earthquakes in California are Choose one: A. typically due to stick-slip behavior along the San Andreas fault. B. always less than magnitude 6.5. C. the result of reverse faulting along the San Andreas fault. D. the result of rifting along the San Andreas fault.
Answer:D
Explanation:
A plausible magnitude 7.8 earthquake on the San Andreas fault could bring wide spread severe, violent and extreme shaking.
IQs as measured by the Wechsler Adult Intelligence Scale are approximately Normally distributed with mean 100 and standard deviation 15. According to the 68-95-99.7 Rule, about _______ percent of adults will have IQs of at least 70.
According to the 68-95-99.7 Rule, about 97.5% of adults will have IQs of at least 70.
Explanation:IQ scores are generally distributed normally which indicates that they form a symmetric, bell-shaped curve when graphed, with most scores clustering around the middle. According to the 68-95-99.7 Rule, also known as the Empirical Rule, we know that approximately 68% of the values lie within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations.
In the case of the Wechsler Adult Intelligence Scale, with a mean of 100 and a standard deviation of 15, an IQ score of 70 is two standard deviations below the mean. Using the Empirical Rule, we can determine that approximately 95% of adults' IQ scores will lie between 70 (100 - 2 * 15) and 130 (100 + 2 * 15). Therefore, to find the percentage of adults with IQs of at least 70, we look at the lower tail which accounts for 2.5% (100% - 97.5%) of the distribution lying beyond two standard deviations below the mean. Subtracting this from 100% gives us 97.5%, which is the percentage of adults who will have IQs of at least 70.