1. 
If lava flows out of Mount Gustaffson at a rate of 45 cubic meters per day, how much lava will have flowed out after 4 weeks?


2. 
Because of sea floor spreading, the Atlantic Ocean is getting wider at a rate of about one cm per year. At that rate of expansion, how much wider will the Atlantic be at the end of threefifths of a century?


3. 
Near the end of the Ordovician period (about 430 million years ago), the earth's sea level is thought to have been about 400 feet above the current sea level. If the earth's current sea level rose by 19 feet, what would the difference in sea level be, compared to the sea level near the end of the Ordovician period?


4. 
The magnetic field of the earth reverses polarity every 100,000 to 1,000,000 years. What would the minimum expected number of polarity reversals be after a period of 184 million years?


5. 
Geotest, Inc. drilled a hole in a granite batholith that was 961 meters deep. Globomax, Inc. drilled one in the same formation that was 1265 meters deep. What was the difference between the depths?


6. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 
