Well into the twentieth century, many scientists believed the ocean floor was
a. sandy.
b. round.
c. rocky.
d. flat.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?