Glaciation had carved out narrow sea inlets between rocky cliffs in scandinavia and on norways coasts there inlets are called

because the sun creates the shadows and its only what people on earth see in the sky which are the phases of the moon.

explanation:

since the crust is readily accessible, scientists have been able to perform hands-on experiments to determine its composition; studies on the more distant mantle and core have limited opportunities samples. so scientists also rely on analyses of seismic waves and gravity and as well as magnetic studies.