Vocab
Wave speed
How fast the wave is traveling.
Formula for wave speed
Wavelength x Frequency
Which feature results from two oceanic plates pulling away from each other?
mid-ocean ridge
What kind of wave is an ocean wave?
Mechanical.
How does the amplitude change as the waves near the shore?
It increases in height.
Wave period
How much time it takes a wave to pass a fixed point
Explain the damage a tsunami can cause
Death, destroy homes, buildings etc.
How do scientists use sonar to study Earth’s oceans?
to map the ocean floor
What must a mechanical waves have to travel through?
A medium (ocean water for ocean waves)
What distinguishes a tsunami from other types of ocean waves?
A tsunami forms when a large volume of water is suddenly displaced up or down.
Wavelength
The distance between one crest to the next crest or one trough to the next trough.
What are the layers of the ocean in order (top- bottom)
Surface
Thermocline
Deep ocean
What determines the density of ocean water?
salinity and temperature
What causes convection currents to form in the oceans
Differences in water density
Ocean trench
A long narrow depression in the deep ocean basin.
Continental margin
The edge of a continent that is covered by ocean.
What is the distance between two crests called?
Wavelength
About how much of earth's surface is covered by ocean water?
70%
What term is used to indicate the maximum distance that a wave moves from its rest position?
Amplitude
Amplitude
Halfway between the crest and the trough
Deep ocean basin
Begins at the end of the continental margin, extending to the deepest parts of the ocean.
What happens to water as a wave moves through it?
Rises and falls in a circular motion.
What determines the temperature of ocean water?
latitude and depth
Which of the following do NOT affect ocean currents?
A .Coriolis effect
B. water density
C. continental deflection
D. mass of water
Mid-ocean ridge
A long undersea mountain chain that forms along the floor of the ocean.