1 passive 2 passive 3 active
<span>An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.</span>
Answer:
The radioactive isotope content of a rock can be used to identify the rocks age.
Answer:
Explanation:
1. made from a dissolved mineral called calcite limestone
Limestone is a sedimentary rock derived from precipitation of the mineral calcite from a solution.
2. made of large grains of sand sandstone
Sandstone is a sedimentary rock derived from aggregates of sand grains.
3. made of very tiny grains of clay shale
Shale is a sedimentary rock made from very fine grain of clay minerals.
4. formed from sandstone quartzite
Quartzite is a metamorphic rock derived from a protolith of sandstone. When sandstone is subjected to pressure and temperature beyond that of metamorphism.
5. fine-grained rock with few or no crystals basalt
Basalt is an igneous rock dark in color and fine grained.
