WorksheetsPast Climates
Total questions: 15
Worksheet time: 8mins
Tree rings can get temperatures back to ...
a hundred years
Around 11000 years ago
200 thousand years ago
450 million years ago
Coral cores can get temperatures back to ...
a hundred years
Around 11000 years ago
200 thousand years ago
450 million years ago
Which climate proxy: thickness and density of each ring yields temperature and precipitation information.
Seafloor sediments
Oxygen isotopes
Tree rings
Glacial ice cores
Which areas produce the most ice cores?
Antarctica
Greenland
Tall Mountains
China
The United States
How do scientists obtain ice cores?
They drill them out of the ground of cold areas
They freeze water samples collected from warm areas
They freeze water samples that they create using carbon injection
They just find them
How old are the oldest ice cores?
80,000 years
800,000 years
8,000,000 years
80,000,000 years
What kind of information do ice cores contain?
Concentration of CO2 in the Atmosphere in past years
Concentration of Methane in the Atmosphere in past years
The temperature of the Earth in past years
Evidence of volcanic eruptions in past years
All of the above
In trees, lower temperatures and drought conditions cause
wide or thick rings
thin rings
oval rings
perpendicular rings
Which climate proxy: Shells of dead organisms preserve some information about the ocean temperatures.
Seafloor sediments
Glacial ice cores
Tree rings
Pollen
Seafloor sediments can get temperatures back to ...
a few years
a hundred years ago
a few thousand years ago
450 million years ago
Which climate proxy: uses plant communities of the past to relate temperature and precipitation patterns.
Seafloor sediments
Oxygen isotopes
Tree rings
Pollen
Pollen can get temperatures back to ...
a hundred years
up to 2 million years ago
450 million years ago
Which climate proxy: uses growth rings, similar to trees on land, for sea surface temperatures and nutrients..
Coral cores
Oxygen isotopes
Tree rings
Pollen
Oxygen isotopes can get temperatures back to ...
a few years
a hundred years ago
a few thousand years ago
450 million years ago
Which climate proxy: find trapped gases, volcanic ash and pollen.
Seafloor sediments
Oxygen isotopes
Tree rings
Glacial ice cores
