Salt Water
How much of the earth is covered by oceans?
71%
They use sonar. Sonar is a system that uses sound waves tm measure distances and locate objects.
What is an ocean current?
mass of moving water
How does air form waves?
Drags along the water and transfers energy to the water to form waves.
How many students are enrolled at BJP?
88
What is salinity?
a measure of the amount of dissolved salt in water
What are some features that are on the bottom of the ocean? (hint: like the earth's surface)
canyons, mountains, trenches, ridges
Downwelling- movement of water from the surface to lower depths (oxygen allows creatures to live deep in the ocean)
Upwelling- the movement of water from the deep to the surface (brings nutrients up, more ocean creatures live in these areas)
Why do waves slow down near the shore?
The wave trough drags and the wave slows.
How many hearts does an octopus have?
3
True or False: Salt water has a greater density than fresh water.
True- it has more dissolved solids
What did much of the deep ocean stay a mystery until about 70 years ago?
It was so deep, more technology was created, more ocean mapping occurred and once scientists realized what lived deep in the ocean, they wanted to learn more.
What are some of the weather patterns caused by El Niño?
changes weather patterns, high winds, extreme weather, change in sea life because of winds and currents
What is a tide and what causes them?
Tides are the rising and falling of water levels in the ocean. The gravity of the moon and sun cause tides.
What underwater creature had his own tv show, Broadway musical, movie, toys, ice cream, etc.?
Spongebob Squarepants
What is salt water made up of?
salts and gases (oxygen, nitrogen, carbon dioxide)
What's the deepest place in the world?
Mariana Trench- 36,000 ft below sea level in the Pacific Ocean
True or False: Longshore currents move water against the shore.
What are the opposite ends of a wave?
Crest- highest point of the wave
Trough- lowest point of the wave
What NYC college basketball team was recently eliminated from the college basketball tournament?
St. John's Red Storm
Name 4 bodies of water that are salt water
All oceans, seas
What are obstacles to ocean exploration?
Dark, cold, lack of air
How should you react if you are stuck in a rip current?
Relax
Don't swim against the current.
Swim following the shoreline.
Float and draw attention to yourself to alert a lifeguard
As the earth rotates, tides ____________.
rise and fall, creating high and low tides.
Water is pulled by gravity into bulges and dips. As the Earth rotates, its movement through these bulges and dips causes tides.
What is the most popular pizza topping?
pepperoni