What happened to the Arctic Ocean during the past 40 years?(1 point)
Responses
It has become warmer.
It has become warmer.
It has become less salty.
It has become less salty.
It has gained more sea ice.
It has gained more sea ice.
It has grown smaller.
It has become warmer and it has become less salty.
It has become warmer.
sea ice
There are more areas of open ocean.
Sea ice has melted, allowing more sunlight to hit the ocean.
pick one answer
How much of Earth is comprised of ice?(1 point)
Responses
about 10 percent
about 10 percent
about 70 percent
about 70 percent
about 90 percent
about 90 percent
about 30 percent
Which feature of Earth would reflect the greatest amount of incoming sunlight?(1 point)
Responses
light ocean water
light ocean water
dark ocean water
dark ocean water
sea ice
sea ice
ice covered by snow
What is the effect of changing temperature on the Arctic Ocean as observed by scientists over the last few decades?(1 point)
Responses
There are more places with cold water.
There are more places with cold water.
There is less saltwater.
There is less saltwater.
There are more areas of open ocean.
There are more areas of open ocean.
There is more sea ice.
has the temperature of the Arctic Ocean changed during the last 40 years?(1 point)
Responses
More sunlight now reaches Earth than in the past.
More sunlight now reaches Earth than in the past.
Sea ice has produced more salt, causing the cold ocean water to sink.
Sea ice has produced more salt, causing the cold ocean water to sink.
Less snow falls in the Arctic now than 40 years ago.
Less snow falls in the Arctic now than 40 years ago.
Sea ice has melted, allowing more sunlight to hit the ocean.