You charge scuba cylinders to three-thousand PSIG ( pounds per square inch gauge ) and the temperature in the compressor room is 65 degrees F. You place the cylinders on the dive boat, where the temperature is 95 degrees F. What will happen to the bottle pressure? Why? What is the new gauge pressure reading?
In the northern hemisphere all stars spin around one point. This is called the North Celestial Pole. What star do we associate with this point for navigational purposes?
How many nations comprise Central America? Name them?
Who was the man who liberated Columbia and much of South America from Spanish rule?