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).
<u>Answer:</u>
<em>Latvia is </em><em><u>G</u></em>
<em>Ukraine is </em><em><u>F</u></em>
<em>Poland is </em><em><u>A</u></em>
<em>Bulgaria is </em><em><u>H</u></em>
<em>Bosnia and Herzegovina is </em><em><u>D</u></em>
<em>Slovakia is </em><em><u>B</u></em>
<em>Russia is </em><em><u>E</u></em>
<em>Croatia is <u>C</u></em>
Answer:
potassium-argon dating
Explanation:
Potassium-argon (K-Ar) dating technique is the most appropriate dating method for establishing the age of a volcanic ash. It is most applicable for dating minerals and rocks more than 100,000 years old. It is based on measuring the product of the radioactive decay of an isotope of potassium (k) into argon (Ar). Since potassium is a common element found in many volcanic ash layer, the time since re-crystallization is calculated by measuring the ratio of the amount of argon 40 (Ar-40) accumulated to the amount of potassium 40 (K-40) remaining in these volcanic ashes.
Pressure increases as we move to the center
