1 Vertical-cumulus, cumulonimbus. 2  A cloud that forms on the ground is called fog. 3  Some clouds you see in the sky might be from airplanes. 4  These are called contrails. 5  High level cirrus clouds may travel at speeds up to 100 mph. 6  Even though clouds float in the air, a single cumulus cloud can weigh hundreds of tons.
1 It costs an average of about $47,000 per year to incarcerate an inmate in prison in California. 2  Over two-thirds of these costs are for security and inmate health care. 3  Since 2000-01, the average annual cost has increased by about $19,500.
Calculating Costs Per Inmate. According to the U.S. Bureau of Prisons, the average annual cost of incarceration in Federal prisons in 2010 was $28,284 per inmate. That cost is reduced at the Federal Community Corrections Centers; in 2010 the annual cost was $25,838.