they act as sunshades from the sun intensity, and filters
Earthquakes happen<span> when rock below the Earth's surface moves abruptly. </span>Usually, the rock is moving along large cracks in Earth's crust called faults. Most earthquakes happen<span> at or near the </span>boundaries<span> between Earth's </span>tectonic plates <span>because that's where there is </span>usually<span> a large concentration of faults</span>
To calculate the thickness of foil, we use formula of volume as
Here, l is the length of the foil, w is the width of the foil and t is the thickness of the foil.
Given, , and .
Substituting theses values in above equation, we get
Thus, the thickness of the foil is 0.0015 cm.