Why does the moon appear to change its shape as seen from Earth A. Different parts of the sunlit moon become visible as the moon revolves around the Earth

B. Different parts of the moon are lit as the moon rotates

C. The moon moves farther and then closer to Earth

D. The sun lights different parts of the moon during different seasons

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

How is the ideal mechanical advantage of a wheel and axle calculated?

Which statements identify what astronomers currently know and think will happen with our universe? check all that apply. the big bang produced dark energy, which accounts for some of the energy needed to expand the universe. the vastness of space may contain a type of matter known as "dark matter." the universe is currently shrinking at a rapid rate. the universe is currently expanding at an accelerating rate. the big bang theory explains all the energy and matter discovered by scientists.