Intro to Oceans Challenge

Intro to Oceans Challenge

Multiple Choice

What percent of the Earth's surface is covered by oceans?

• 19%

• 29%

• 55%

• 71%

• 84%

The Blue Planet!

71% of Earth's surface is covered in ocean, making marine environments the largest biomes on our planet!

Multiple Choice

How much of Earth's water is contained in the ocean?

• 3%

• 27%

• 39%

• 78%

• 97%

The majority of Earth's water is found in the oceans.

Only about 2.5% of the water supply is fresh water (necessary for our survival too!)

Multiple Choice

The Ocean is the primary geologic feature that controls the Earth's regional and world-wide climates

• Es verdad!

• Es falso!

The Water Cycle

Evaporation, condensation, and precipitation cycle water through hydrosphere

World's Largest Carbon Sink

Oceans absorb excess CO₂ from the atmosphere

Coastal Climate Moderator

Water is great at resisting temperature changes due to high specific heat of water.

Global Weather Impacts

#HurricaneIsaias #Thanks2020

Multiple Choice

The moon (and sun's) gravitational pull on the Earth is the direct cause of...

• currents

• tides

• wind

• precipitation

• waves

Extraplanetary influences!

The gravitational pull of the moon "pulls" the water towards it = tides. When the moon and sun align, that produces the highest tides!

Multiple Choice

The Earth's rotation, wind, changes in temperature, and changes in salinity result in...

• currents

• tides

• wind

• precipitation

• waves

Horizontal Movement

This movement is influenced by surface winds and Earth's rotation

Vertical Movement

This movement is influenced by temperature and salinity.

Multiple Choice

The mid-Atlantic Ridge is:

• The trench that divides the Indian and Atlantic parts of the ocean.

• Earth's longest mountain chain, which happens to be underwater

• area where the N. American continent drops off into deep ocean

• the area of greatest volcanic activity on Earth

• the deepest trench on Earth

The Mid-Atlantic Ridge

Sometimes this is described as the baseball seam of the Earth!

Multiple Choice

Which of the following open ocean zones (pelagic) are ordered from most shallow to most deep?

• abyssalpelagic, bathypelagic, mesopelagic, epipelagic, hadalpelagic

• abyssalpelagic, epipelagic, bathypelagic, hadalpelagic, mesopelagic

• mesopelagic, hadalpelagic, abyssalpelagic, bathypelagic, epipelagic

• epipelagic, mesopelagic, bathypelagic, abyssalpelagic, hadalpelagic

Ocean Zones

Epipelagic

Mesopelagic

Bathypelagic

Abyssalpelagic

Hadalpelagic

Multiple Choice

The average pH of the ocean is...

• 2.7

• 7.0

• 8.1

• 11.3

Ocean water is slightly basic

Minerals enter from rivers & decomposing organic matter