There are 50 questions worth 2 points each. Most of them offer 4 or 5 possible choices. Choose the one you believe best fits as an answer. Read each question carefully before selecting the best answe r .
Fresh water has a mass density of one gram per cubic centimeter.
A common mass-movement medium for earth materials is a slurry. In Cameroon, Africa, in 1986, a volcanic lake belched and sent a flood of gas over the rim of the crater, killing about 1700 people. In the following table choose the appropriate rock names to fill in the blank positions. In 1883, this volcano exploded and the resulting tsunami killed 36,000 people on Java and Sumatra.