1 point each. The earth's core consists mostly of iron.
All minerals are crystalline solids.
Minerals fracture along planes of weak atomic bonds in their structures. Cinder cones commonly erupt pyroclastic material T F 5. Fissure eruptions generally produce rhyolite lava flows. The intensity and type of weathering found in a given area depends in part on the slope of the ground and its drainage. Pahoehoe refers to the smooth, billowy or ropy surfaces on lava flows.