Answer:
The red sea
Explanation:
atoms. What is the half-life of carbon-14?
O
A. 2,865 years
O
B. 50 years
O
C. 5,730 years
O
D. 7 years
SUENIT
A carbon-14 sample starts with 100 atoms, and 5,730 years later, there are 50 atoms the half-life of carbon-14 are 5,730 years
The chemical element carbon has the atomic number six and the letter C assigned to it. It has a tetravalent atom, which means that four of its electrons can be used to create covalent chemical bonds. It is nonmetallic. The periodic table's group 14 includes it. The crust of the Earth contains 0.025 percent carbon.
Similar to hydrogen, oxygen, lead, and all the other chemical elements listed in the periodic table, carbon is an element. An extremely common element is carbon. As in diamonds and graphite, it can exist in pure or almost pure forms, but it can also interact with other elements to form molecules.
The half-life of carbon-14's degradation into nitrogen-14 is 5730 years, making it an unstable element. The time it takes for half of the Carbon-14 atoms to decay back into Nitrogen-14 is therefore 5730 years.
Therefore, Thus option (c) is correct.
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Answer: C
Explanation:
The movement of rivers. The water pressure of rivers can cut deep into a river bed. Rocks and things from the river bed are carried downstream, creating a narrow channel.
The difference in arrival times of P and S waves increasese at seismograph recording stations because the farther a seismic recording station is from the earthquake epicenter.
As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S waves.
S waves, which travel at about half the speed of P waves, arrive later. A seismic station close to the earthquake records P waves and S waves in quick succession. With increasing distance from the earthquake the time difference between the arrival of the P waves and the arrival of the S waves increases.
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I am in 5th grade and I learned this 1 week ago: There are 4 types of air masses : Maritime polar, Maritime tropical ,Continental polar, and Continental tropical
The Continental polar is an air mass that brings cold, dry air and they are somewhere in the Artic.
b. Iceland is the country with the the coldest climate in Western
Europe.
C. Scandinavia is warmer than the countries along the
Mediterranean Sea.
d. Some of the highlands in Western Europe have a hot tropical
climate.
Answer:
b. Iceland is the country with the coldest climate in Western Europe.
Explanation: