1. 
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 threefourths of a century?


2. 
If lava flows out of Mount Gustaffson at a rate of 45 cubic meters per day, how much lava will have flowed out after 3 weeks?


3. 
Geotest, Inc. drilled a hole in a granite batholith that was 955 meters deep. Globomax, Inc. drilled one in the same formation that was 1195 meters deep. What was the difference between the depths?


4. 
A volcanic eruption last week on Torubella Island released fifteen million tons of ash into the air. The last time the volcano on the island erupted, fiftythree million tons of ash was released. How much more ash was released on the previous event compared to the most recent one?


5. 
There are 5000 watts of continuous power available from the Big Town thermal spring. The Littleville thermal spring has 24 times that much power available. How much continuous power is available at the more powerful spring?


6. 
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 25 feet, what would the difference in sea level be, compared to the sea level near the end of the Ordovician period?

