The 180 degree meridian is arbitrarily called the __________________, an imaginary line established to compenste for the cumulative time zone changes.

The distance from the Earth to the sun in known as a(n) __________.

We always see the same side of the Moon because ______.

Jupiter’s Great Red Spot is presently believed to be ________.

A strong acid is a concentrated solution of the acid.

Which of the following is one of the five most common water contaminants?

Which of the following is a charateristic of an acid solution?

Two isotopes of the same element have the same number of _________.

Atoms of an element that have different numbers of neutrons are called isotopes.

The volume of an atom is mostly empty space.