Entry-level medical education programs are tertiary-level courses undertaken at a medical school. Depending on jurisdiction and university, these may be either undergraduate-entry (most of Europe, India, China), or graduate-entry programs (mainly Australia, Canada, United States).
1 hail: precipitation in the form of balls or irregular lumps of ice (5 mm or more in diameter âanything smaller is considered an âice pelletâ). 2  snow: precipitation composed of white or translucent ice crystals, chiefly in the form of snowflakes.  sleet: a mixture of rain and snow.
Imagine a drop or flake falling through a long tube that contains the air between the clouds and the Earth. The air inside the imaginary tube is the atmosphere. Differences in temperatures in different parts of the atmosphere account for the differences we see between snow, sleet, and freezing rain. The liquid precipitation that falls to Earth's surface is rain. Rain can begin as snow, but by the time it reaches the Earth's surface, it has melted because the temperature closer to Earth is warmer.