Waves
Currents
Random Ocean Facts
Tides
hmmmmmmmmm......
100
This is the term for the highest point of a wave.
crest
100
What is a surface current?
The current of water at the ocean surface caused by the wind
100
This happens on the coastline when strong winds push the surface water away from the land
Upwellings
100
What is the definition of a tide?
Simply put: the rising and falling of sea level
100
why are some currents cold and others are warm?
Usually warm water has a higher salinity(salt content), but it remains less dense than cold water, so cold water is heavier and flows under warm water.
200
Waves are described as continuing ________.
energy
200
These winds, found at mid-latitudes, help drive ocean currents eastward.
Westerlies
200
The crest of the wave topples forward when it meets the shoreline(due to friction) into a little mass of water called
Breaker
200
Tides are caused by which force
Gravity
200
What is the difference between a tidal wave and tsunami?
A tidal wave is by definition a wave caused by ocean tides, whereas a tsunami is almost always caused by an earthquake under water.
300
The distance between two consecutive crests or troughs of a wave.
wavelength
300
These currents form due to differences in temperature and salinity.
deep ocean currents
300
Name the two types of currents
Surface currents and Density currents
300
What is a neap tide?
Weaker then normal tides that occur when the sun and the moon are at right angles.
300
Come up to the board and draw the directions of the four winds that cause ocean currents (ones we have talked about)
400
The three factors that determine wave height.
Wind speed, wind duration, and distance that the wind blows on the wave
400
These winds, named after their use in navigation, move warm surface currents westward near the equator.
Trade Winds
400
This is a series of ocean waves that send surges of water (sometimes over 100 feet high), onto land.
Tsunami
400
What is a spring tide?
Higher then normal tides cause by the sun and moon being in line with each other. This causes a gravitational pull of the sun teamed up with the moon.
400
Name some of the weirdest things that have washed up on shore that we listed in the slideshow. MUHAHAHA!(Mrs. T's evil laugh) Have to get three at least!
Giant Dice, snowballs, large pieces of driftwood, Giant Squid, motorcycle.
500
The stronger this is, the bigger the wave.
wind speed
500
What are density currents?
A mass of surface water that is cooler or saltier, making it denser(heavier) and causing it to sink towards the bottom of the ocean
500
What is the trough of a wave?
The lowest part of a wave
500
Where do the highest tides in the world occur?
The Bay of Fundy
500
What creates the largest tides in Fundy? (have to name both parts and definition for each)
1)Resonance-natural rocking motion in the Bay.
2)Shape of the bay and ocean floor.