Waves
Tides
Coastlines
Vocabulary
100
Define wave.
Periodic up and down movement of water.
100
Which two gravitational forces pull on water?
Moon
Sun (1/2 the strength of the moon's)
100
What percentage of our cities are on the coast?
2/3rds or ~66.7%
100
The daily change in the level of the ocean's surface.
Tide
200
Water in a wave moves in this motion.
Circle
200
These type of tides occur during a New and Full moon.
What are Spring Tides?
200
Where do the greatest waves originate from and end?
Far out from sea towards the coast growing as they come.
200
Highest point of the wave
Crest
300
The three factors that determine wave size.
1. Speed of the wind
2. Length of time that the wind blows
3. Wave Fetch
300
How are tides in the Pacific coast different than tides in the Atlantic coast and the Gulf of Mexico?
Mixed pattern of high and low tides due to layout of land and topography.
300
When a tsunami is approaching a shoreline, how should people respond?
Move inland/ uphill.
300
Time period between flood tide and ebb tide with NO tidal currents.
Slack Water
400
What is the foamy mass of water that washes onto shore?
Breaker
400
Where are tidal oscillations not obvious (only need one of the two answers)?
Straight Coastlines
Open Oceans
400
Who is the predator of the crab from the Blue Planet II Film? (2 correct answers)
Chain Moray and/ or Octopus.
400
Swift movement of water caused by the return of water to the ocean through channels in underwater sand bars.
Rip Currents
500
As waves approach a gradual shoreline, __________ increases and ________ decreases.
Wave Height increases.
Wavelength decreases.
500
What type of tide is produced when the earth, sun and moon are aligned?
Spring Tide
500
The ________ Coast has tides that are semidiurnal meaning they occur twice a day. Two high tides and two low tides.
Atlantic Coast
500
Number of crests passing a given point over a timeframe.
Wave Frequency