Plate tectonics are important to geoloigists because they explain how the continents make up the earths crust.
Answer:
counterclockwise in Northern Hemisphere but clockwise in Southern Hemisphere
Explanation:
In fact, tropical cyclones — the general name for the storms called typhoons, hurricanes or cyclones in different parts of the world — always spin counterclockwise in the Northern Hemisphere, and spin in the opposite direction in the Southern Hemisphere.
Answer:
Jupiter is the 5th and most fastest spinning planet it completes an orbit around 11.86 years every year.
Explanation:
Jupiter is the biggest planet in our solar system, it's a gaianet and gaseous planet about 2.5 tims of all the planets combined. Like other planets jupiter doesn't have any defined solid surface, as a result of its rotation it has an oblate spheroid bulge along the equator and at it's boundaries are greater turbulence of storms and popular amongst them is the great Red storm.A complete day at the equator can be estimated by just nine hours and 50 minutes at the poles.
Answer:
B and C
Explanation:
B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.
This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.
From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.
C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.
The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.
From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.
Water shortage, domestic waste, coastal erosion
