Which statements describe planetesimals? Select three options. They are the origins of planets. They formed from gas and dust. They were created during the big bang. They are believed to have developed in debris disks. They contain 98 percent of matter in the solar system.

Plzz worth 22 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation

Why does lightning travel from clouds to the ground?

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