<h2>
Answer: They are extra-high tides and extra-low tides.</h2>
Explanation:
Tides are periodic movements of the great masses of water on our planet as part of the gravitational attraction exerted by the moon and the sun on Earth.
In this sense, there are two very special cases: The Spring and Neap tides.
<u>Spring tides </u>
Occur when there is a full moon or new moon, which makes the <u>tides higher.</u> During these lunar phases, the Moon, the Earth and the Sun are aligned and the gravitational attraction power is greater.
<u>Neap tides </u>
Occur when the moon, the earth and the sun form a right angle (
), being the gravity attraction on the masses of water the minimum. This happens in the crescent and wanning phases.
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.
Ocean tides are the result of differences in the gravitational force between
the sun and the Earth's near side and far side, and ditto for the moon.
One option that is not true about Polar projections is that C. It only shows one hemisphere.
<h3>What do polar projections do?</h3>
Polar projections are a type of azimuthal projection that aim to showcase the furthest areas north and south of the Earth. This means that they show both the Arctic and Antarctica in the model.
The Artic is in the Northern hemisphere and Antarctica is in the Southern hemisphere. This means that both hemispheres are shown and it is wrong to say that polar projections show only one hemisphere.
Find out more on polar projections at brainly.com/question/298112
#SPJ1
Answer: The Sahara
Explanation: The Sahara is the largest hot desert in the world, and the third largest desert behind Antarctica and the Arctic, which are both cold deserts.
