Geologists have learned that Earth's interior is composed of layers by studying? a)the presence of fossils in Earth's crust
b)the size of volcanoes
c)the speed and path of seismic waves as they travel through Earth
d)the pattern of earthquakes that occurs on Earth's surface

Which of the following is a source of heat for magma formation? magma plumes in the continental crust friction due to divergence friction due to subduction magma plumes in the oceanic crust

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?