Answer:
To pinpoint the last ice age, scientists analyze rock layers and study the sedimentary records of the Earth's past climate changes.
Explanation:
One way to do this is by studying glacial deposits, such as till and moraines, which are left behind by glaciers as they advance and retreat. These deposits can be found in areas that were previously covered by ice and contain rock fragments that have been transported and deposited by glaciers. By studying these deposits, scientists can determine the timing and extent of glacial advances and retreats, which can provide information about the cycles of the ice age.
Another way to study the last ice age is by analyzing the sedimentary rock layers that were laid down during the ice age. These layers contain evidence of past climate conditions, such as the presence of fossilized pollen and microscopic plankton, which can provide information about the types of plants and animals that lived during the ice age, and their distribution. Scientists can also study isotopic ratios of oxygen found in layers of sedimentary rocks, which can give information about the temperature and precipitation in the past.
Additionally, scientists also look at the geomorphological features such as U-shape valleys, cirques, horn, arêtes, hanging valleys, fjords, etc, which are formed by glaciers. These features can be used to reconstruct the pattern of glacial retreat and establish a chronology of glacial events.
By analyzing rock layers and studying the sedimentary records of the Earth's past climate changes, scientists can pinpoint the timing and extent of the last ice age and gain a better understanding of the Earth's climate history.
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What event incited the protests in Iran?
Answer:
The imposition of Islamic law, a continuing economic crisis, lack of freedom of expression, violation of women's rights, brutality carried out during protests, internet cutoffs, and the killing of Mahsa Amini were some of the reasons for the start of civil protests in Iran in 2021-2022.
Explanation:
After an earthquake, which type of seismic wave arrives first at a
seismometer?
OA. P waves
OB. L waves
OC. S waves
OD. P and S waves
Answer is A.
Answer:
OA. P Waves
Explanation:
The first type of seismic wave to arrive at a seismometer after an earthquake is usually the P-wave (Primary wave or Pressure wave).
what is the difference weather between 21 march and 21 september​
Answer:
An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun. This occurs twice each year: around 20 March and 23 September. In other words, it is the moment at which the center of the visible Sun is directly above the equator. The dates are slightly variable due to leap years and other factor
What was the focus point for tabas Iran earthquake
On September 16th, 1978, at 15H, 35M, and 53.05 (GMT), the greatest earthquake in inland Iran in recorded history took place. In the Tabas Township, this earthquake with a Richter scale reading of 7.7 caused almost 15,000 casualties.
What caused the Iran earthquake?According to Tilmann, Iran is a "high-risk location for earthquakes." The movement of many tectonic plates beneath the nation is the cause. One plate slides beneath another near the earthquake's source in the Gulf of Oman, which explains why "extremely deep earthquakes" happen here.
The 1,500-kilometer-long fault line connecting the Arabian & Eurasian tectonic plates is where the earthquake's epicentre, which is close to Halabjah, is located. Through western Iran and then into northeastern Iraq, the fault line runs. The area experiences regular earthquakes.
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