Earth is closer to the sun in december than it is in june. explain why warmer air temperatures and summer occur in the northern hemisphere in june rather than in december.

Because the Earth's axis is tilted.

Due to the tilt of the Earth's axis, the rays of the sun hit the Earth at different angles. During some times, in America June, the sun hits the Northern hemisphere more, thus making it summer here and winter in other hemispheres.

Hope this helps!

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

polar areas, such as antarctica or the south pole.