Questions

Metamorphism is the change of minerals or geologic texture in pre-existing rocks, without the protolith melting into liquid magma. The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids.

The parent rock must be in solid form. Tons of pressure must be applied for metamorphism to happen. The process must take place underground.

Materials that allow electricity to flow are called electrical conductors and that materials which does not allow electricity to flow are called Insulators.

The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.

When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

Mark Fields

Woodland tribes lived in wigwams and longhouses. Wigwams are round, wooden-framed structures, covered in bark. Only one familylived in a wigwam. Longhouses are made the same way as wigwams except they are rectangular, instead of round. They have a long hallway with rooms on both sides. Several related families shared a longhouse.

Longhouse Commonly lived in by entire Native American families in the Eastern Territories pre-colonization.

MAU is Multistation Access Unit