Wave Basics
What is the highest point of a wave called?
Crest or peak
What creates typical ocean waves?
Wind
What two things cause currents?
Wind and density differences
What instrument do we use to listen underwater?
SONAR
What do waves carry?
Energy
What are the two types of waves? Describe the motion.
Longitudinal and transverse
What creates tsunami waves?
Earthquakes, landslides, volcanoes
What makes water more dense?
Salt and cold temperature
Marine mammals use this to "see" things in the ocean.
Echolocation
Does sound travel faster at shallower or deeper depths?
Shallower
What is the distance from trough to trough?
Wavelength
What is the wave speed of a tsunami?
500km and up
How does the Coriolis force move objects?
It deflects them to the right or left of the wind direction
Does sound travel faster or slower in hot water?
Faster
Why do we use sound to study the ocean?
We can use SONAR to see the ocean depth
What do you need to calculate wave speed?
Wavelength and frequency
What are two differences between tsunamis and ocean waves
Speed, wavelength, cause, height
Describe Eckman transport.
Water moves in a spiral as you go deeper
Is the speed of sound faster or slower in water than air?
Describe wave height, wave length and wave period to for a flat wave.
Wave height is low, length is long and wave period is low
What type of wave is a sound wave?
Longitudinal
Why do tsunamis get so big?
They have a lot of energy
What is a thermocline and halocline?
Thermocline- where hot and cold water meet
Halocline- where fresher and saltier water meet
What causes the most sound in the ocean?
Humans
What is an El Nino?
Water gets warmer around the oceans