Question: If nuclear reactions in stars cause them to brighten up the summer sky, then nuclear reactions in stars cause them to brighten up what? Answer choices: - the morning grass - the elemental waves - an object - the summer sky - hydrogen and oxygen - Change colors - the evening tide - an electron lens
Answer: the summer sky

Question: If wind going through a whistle would cause vibrations in the whistle, then what would wind going through a whistle cause? Answer choices: - vortex - friction - vibrant colors - waves - Energy. - kinetic energy - absence of sound - vibrations
Answer: vibrations

Question: If contact between rocks over long periods of time causes rocks to be subrounded, then contact between rocks over long periods of time causes rocks to be what? Answer choices: - coiled - homogenous - inactive - subrounded - dormant state - barrel-shaped - erosion - threatened
Answer:
subrounded