Which body have a period of revolution of 29.6 days?

a. the sun
b. earth
c. the moon
d. jupiter

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

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