Unit 2, LS2 Ice Cores and Milankovitch Cycles

The Vostok Ice Cores were drilled from ice in...

• Russia.

• Greenland.

• Antarctica.

• Alaska.

the Milankovitch cycle of Eccentricity is when...

• the shape of Earth's orbit changes in the amount of how round or oval it is.

• The tilt of Earth's orbit changes from 22.5 to 24.5 degrees

• the wobble of Earth on it's axis changes positions.

• the Earth's volcanoes all erupt at once.

the Milankovitch cycle of Obliquity is when...

• the shape of Earth's orbit changes in the amount of how round or oval it is.

• The tilt of Earth's orbit changes from 22.5 to 24.5 degrees

• the wobble of Earth on it's axis changes positions.

• the Earth's volcanoes all erupt at once.

the Milankovitch cycle of Precession is when...

• the shape of Earth's orbit changes in the amount of how round or oval it is.

• The tilt of Earth's orbit changes from 22.5 to 24.5 degrees

• the wobble of Earth on it's axis changes positions.

• the Earth's volcanoes all erupt at once.

The Vostok Ice Core have a record of _____ climate cycles.

• 2

• 3

• 4

• 5

How far back into Earth's past does the Vostok Ice Core provide a record of the planet's climate?

• 100,000

• 41,000 years

• 26,000 years

• 420,000 years.

The term "insolation" refers to...

• the amount or intensity of the sun's rays striking a part of

• the amount of material put into a structure to hold in heat.

• the process of heating Earth's surface.

• the sum/total of all of the radiation from the nearby stars.

The reason we have seasons on our planet is because...

• we are closer to the sun during the winter and further during the winter.

• the tilt of Earth's axis allows for more direct sunlight in the summer and less direct sunlight in the winter.

• seasonal wind patterns carry warmer winds during the summer and colder winds during the winter.

• the Earth's orbit becomes more like an oval to give us different seasons.

The current tilt of Earth's axis is...

• 22.1 degrees.

• 23.5 degrees.

• 24.1 degrees.

• 98.6 degrees.

What is the primary greenhouse gas measured in the air bubbles trapped in the Vostok Ice Core?

• Nitrogen

• Carbon dioxide

• Oxygen

• Methane