Wave Math
A tsunami wave travels 200 miles in 2 hours. How far does it travel in 1 hour?
100 miles.
If it takes 3 hours for a tsunami to reach shore, how many minutes is that?
180 minutes
A family climbs 20 feet above sea level to escape a tsunami. If the wave is 15 feet high, how many feet above the wave are they?
5 feet
If there are 8 earthquakes in a week, how many earthquakes happen in 3 weeks?
24 earthquakes
A family walks 3 miles inland to avoid a tsunami. If they walk 1 mile every 20 minutes, how long does it take them?
60 minutes or 1 hour.
If a wave travels 500 miles in 5 hours, what is its speed in miles per hour?
100 miles per hour.
A tsunami travels at 300 miles per hour. How far will it travel in 4 hours?
1,200 miles
A wave covers an area of 30 square miles. If it doubles in size, what is the new area?
60 square miles.
A volcano erupts every 4 months. How many eruptions happen in 2 years?
6 eruptions
If a group of 60 people is evacuated and each boat holds 10 people, how many boats are needed?
6 boats
A wave height doubles when it nears shore. If it starts at 6 meters high, how high is it near the shore?
12 meters
If a wave takes 10 seconds to crash on the shore, how many waves crash in 1 minute?
6 waves
The ocean floor drops by 10 meters after an earthquake. If it rises 3 meters during a tsunami, what is the net change?
A drop of 7 meters
The Ring of Fire contains 75% of the world's active volcanoes. If there are 800 volcanoes worldwide, how many are in the Ring of Fire?
600 volcanoes.
A town evacuates 900 people. If each bus carries 30 people, how many buses are needed?
30 buses
A tsunami consists of 4 waves. If each wave is 15 meters high, what is the total height of all the waves combined?
60 meters.
It takes 5 hours for a wave to travel 1,000 miles. How many miles does it travel per hour?
200 miles
A tsunami wave is 25 meters high, but 5 meters of the wave crash into a cliff. How much of the wave is left to hit the shore?
20 meters
A tectonic plate moves 3 meters per year. How far does it move in 5 years?
15 meters
A family climbs 12 meters to safety. If they stop halfway to rest, how far have they climbed?
6 meters
A wave starts at 3 meters high and grows 2 meters higher every minute. How high is the wave after 5 minutes?
13 meters
A wave travels 240 kilometers in 4 hours. How long does it take to travel 60 kilometers?
1 hour
A family travels 8 miles inland to avoid a tsunami. If they walked 2 miles per hour, how long did it take them?
4 hours
If 90% of tsunamis happen in the Pacific Ocean and there are 120 tsunamis worldwide, how many occur in the Pacific?
100008 tsunamis
A rescue team has 5 helicopters, each carrying 8 people at a time. How many people can be rescued in one trip?
40 people