Even Though the Heliocentric Model of Copernicus Had Many Advantages

question 61

Multiple Choice

Even though the heliocentric model of Copernicus had many advantages over the Ptolemaic model, it suffered from the assumption that the

• A) planets moved in ellipses about the Sun
• B) planets moved in perfect circles about the Sun
• C) planets moved in perfect circles about the Earth
• D) Earth was not rotating on its axis

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Definitions:

Atomic Nucleus

The small, dense region at the center of an atom, containing protons and neutrons and holding most of the atom's mass.

Beta Particle

A high-speed electron or positron emitted during the radioactive decay of certain atomic nuclei.

Atomic Nucleus

The dense central core of an atom, consisting of protons and neutrons and housing the majority of an atom's mass.

Beta Particle

A high-energy, high-speed electron or positron emitted during radioactive decay of an atomic nucleus.