Explanation:
The Earth is closest to the Sun every January, but it is the fact that the north pole of the Earth's axis is tilted away from the Sun at that time of year which causes it to be winter in the northern hemisphere. B. Given the effects of precession, will this still be the case in 13,000 years?
Answer:
City B will have the highest annual range of temperature
Explanation:
City B will have a higher annual temperature than city A. <u>It is because the northern hemisphere is mainly covered with landmasses but the southern hemisphere is mostly covered by the water body</u>. So there is <u>more absorption of heat on the ground surface and the landmass area</u>. The oceans when heated it reflects some heat energy back into the atmosphere, and some of it is transferred to the land area by the sea breeze.
These events ultimately lead to an increase in the heat amount in the northern hemisphere.
Answer:
The water has left the system before if could be measured.
Explanation:
Some of the water has flowed quickly along as surface runoff and through the river channel. Scientists would then missed the chance to measure this rainfall. Some water will have been absorbed by nearby vegetation. The vegetation then releases the water in a vapor state, to the atmosphere. This process is known as transpiration. Heat in the atmosphere causes evaporation and the water never joins the soil of groundwater to be measured as part of the water table.
Answer: is constant
Explanation:
In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.
Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.
This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.