The Copernican Revolution Most of Chapter 3 was covered on the first exam. Internal Energy is the total kinetic energy of all the atoms and molecules inside an object. You should be able to convert temperatures between the Fahrenheit, Celcius, and Kelvin scales.
Heat is a transfer of internal energy.
We haven't talked much about the Moon, so the material on the Moon will be covered on the next exam. You should know that unlike the Earth, there is little or no erosion on the Moon, because it has no atmosphere or oceans. Nearly all the craters on the Earth have eroded away, while the Moon's surface is full of craters. We'll explore this more after the exam, but it's a good example of the power of erosion to change the Earth's surface. You should know how radioactive dating is used to estimate the ages of rocks, and therefore to derive a lower limit to the age of a planet.