Oceans

Question 1

What percent of the surface is ocean? And what percent is land?

Answer 1

70% ocean

30% land

Question 2

What does the sun warm more: low latitude surfaces or high latitude surfaces?

Answer 2

Low latitude surfaces

Question 3

What does the sun warm more: light-colored surfaces or dark-colored surfaces?

Answer 3

Dark colored surfaces

Question 4

What does the sun warm more: wet surfaces or dry surfaces?

Answer 4

Dry surfaces

Question 5

What does the sun warm more: vegetated services or bare surfaces?

Answer 5

Bare surfaces

Question 6

True or false: the ocean warms and cools more slowly than the land.

Answer 6

True

Question 7

What is the main cause of density driven currents?

Answer 7

The main cause is differences and ocean surface temperature and salinity

Question 8

What is the Long explanation of density currents?

Answer 8

Differences in sunlight absorbed by the oceans surface caused differences in temperature and salinity which causes differences in density which causes the sinking in rising of water

Question 9

What is the main cause of surface currents?

Answer 9

Wind

Question 10

What is the long explanation of surface currents?

Answer 10

Differences in Ocean and land temperature leads to winds which cause the removal and piling up of water which causes differences in water pressure which causes wind driven currents which cause movement of warm and cool water which cause new differences in ocean temperatures and so on

Question 11

Why do we study of oceans in Minnesota?

Answer 11

It covers 70% of our earth
It affects Minnesota’s precipitation
It effects the worlds climate

Question 12

How did the oceans form?

Answer 12

There was volcanic eruptions
Which gave water vapor
Which was held in the atmosphere
When it eventually began to rain and filled the oceans basins

Question 13

In a stance why did the ice take so long to melt in saltwater?

Answer 13

The eyes floated on top of the dense salt water which kept it insulated

Question 14

In ice dance why did the ice melt so quickly in freshwater?

Answer 14

The ice and ice water melted down

Question 15

How do you determine density?

Answer 15

Mass divided by volume

Question 16

List one ocean salt

Answer 16

Sodium chloride

Question 17

What is salinity?

Answer 17

The amount of salt dissolved in water

Question 18

What does the Archimedes principle state?

Answer 18

That in the object will stay afloat if it displaces water equal to its weight

Question 19

What is buoyancy?

Answer 19

The force that acts upward

Question 20

What force acts downward?

Answer 20

The weight of the object

Question 21

In the Cartesian diver lab, why did the open ended diver sink?

Answer 21

When we applied pressure to it,

it compressed air and increased its mass

Question 22

In the Cartesian diver lab, why did the sealed diver sink?

Answer 22

It’s volume decreased

Question 23

What do you Cartesian diver’s have to do with the ocean?

Answer 23

To go down there must be more dense than water

Question 24

Name some density currents

Answer 24

Antarctic bottom water

North Atlantic Deep water

Question 25

Describe an upwelling

Answer 25

Where cold deep water rises to the surface bringing nutrients

Question 26

Define the Coriolis effect

Answer 26

The shift of wind and water due to the earths rotation

Question 27

What is a gyre?

Answer 27

A large system of a rotating ocean currents

Question 28

Which way do gyres move in the northern hemisphere?

Answer 28

Clockwise

Question 29

Where is the atmosphere warmth from?

Answer 29

From below