1. Suppose an earthquake occurred off Alaska. Using the wave speed from Table 20-2, calculate how long it would take a tsunami to travel to Hawaii, a distance
of about 4000 km.

What are two ways in which waves erode the land?

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Explain why ecosystem diversity results in species diversity in a healthy biosphere