These are all T/F Near-Earth Objects (NEOs) are comets and asteroids that have b
ID: 236305 • Letter: T
Question
These are all T/F
Near-Earth Objects (NEOs) are comets and asteroids that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth's neighborhood.
Red sprites and blue jets are upper atmospheric optical phenomena associated with thunderstorms that have only recently been documented using low light level television technology.
Around 1500, we entered a significant cooling trend that began to extend ice sheets. This marked the beginning of the Holocene Climatic Optimum.
3.8 b.y.a. climate was probably much warmer (known from geologic records), due to the increased levels of CO2 resulting from increased tectonic activity and lower silicate weathering.
The three agents of erosion are water, wind, and barometric pressure.
At minimum, climate variability is when conditions of at least one 300 yr period are significantly different than other 300 year or longer periods.
the strongest evidence for "Snow Ball Earth" are glacial striations found in Mexico (Middle America), which was positioned at the North Pole during the climatic event.
Volcanoes serve as perturbations on climate and absorb CO2 from the atmosphere.
Minerals are composed of two or more rock types.
With increased Sun spot activity, there is more solar flux since areas around the sun spots dramatically increase in temp.
An increase of .5C changed the livability of Greenland 800 years ago.
Some cultures depend on glaciers for sources of drinking water.
Venus has a "Runaway Greenhouse" with high levels of silicate weathering causing a strong negative feedback loop.
Explanation / Answer
Answer 1 – True
The word NEO is used for near earth objects, the term mat be applied to any solar system object which owing to its orbit lies close to earth. Comets and Asteroids are objects classified based on their sizes.
Answer 2- True
Red sprites and blue jets are associated with thunderstorms in upper atmosphere and have been detected recently using low light television technology. Red sprites is an optical occurrence which can be summarized as a week flare originating above active thunderstorm.
Answer 3: False
The Holocene climatic optimum was a period of warmer climate.
Answer 4: True
The climate at 3.8 b.y.a was much warm and the warming has been attributed to high CO2 content at that time.
Answer 5: False
The weathering process are described as physical or mechanical and chemical. The agents of mechanical weathering is wind, galacier, water etc. the agents of chemical weathering are precipitation, action of plants etc.
Answer 6: False
Climatic variability is addressed over a span of few decades lesser than averaging period of 30 years only.
Answer 7: True
The available evidence of glacial striations from Gulf of Mexico indicates past glacial event.
Answer 8: False
Volcanoes do not absorb CO2 but volcanoes emis CO2.
Answer 9: False
Answer 10: False
Sunspots are associated with dark areas and these are linked to reduced solar flux.
Answer 11: True
The livability of Greenland was shaped due to temperature change of 0.5 degrees and due to this temperature drop it becomes possible for Vikings to navigate in ice free seas and this led to colonization of Greenland. .
Answer 12: True
Glaciers are important source of drinking water for people living on hilly areas in arid regions.
Answer 13: False
The “Runaway Greenhouse” of venus is supposed to be due to sun action on water vapor.
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