The answer is b an astronomical unit
The speed of a wave measures how far one particular crest (or trough) moves in a given amount of time. The speed of the wave changes according to the following equation:
v = λ
* f
According this equation, it follows that as the speed and length of a wave decreases, the wave grows higher (the higher the frequency).
Meteorology is the study of meteors. They are termed as shooting stars that are commonly the pieces of dust that burn in the earth's atmosphere from space.
<h3>What is Meteorology?</h3>
Meteorology is the branch that deals with the earth's atmosphere and also varies with the moisture and temperature of the varied weather conditions.
Some major areas to know about meteorology are precipitation and many more natural calamities that are caused due to the movements in space or the earth's atmosphere.
Meteors are also among those that are also known as the shooting star, it is the part of the debris that burns up and falls at a greater speed in the earth's atmosphere.
Therefore, the correct option is the second word.
Learn more about metrology here:
brainly.com/question/25526298
The layer of Earth that is under the Crust is called the Mantle - so the statement is correct. Crust is the solid shell on which we live and it's a lot thicker under the land than under the oceans.
Mantle is fluid in contrast to the Crust - so the Crust can be said to float over the mantle.
