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science
common assessment
| Term | Definition |
|---|---|
| What two gases make up about 99% of Earths atmosphere? | 78%nitrogen 21%oxygen |
| In the debate over global warming, what is it that scientist disagree on? | what is causing this warming |
| If the global warming trend continues, what will happen if the polar ice caps and mountain glaciers melt? | there could be a rise in sea level and lots of flooding |
| Besides water vapor , what are the two major greenhouse gases contributing to global warming? | carbon dioxide and methane |
| list four possible results of global warming | 1.rise in sea levels and lots of flooding 2.fertile regions 3.increase in surface area 4.increase in frequency in storms |
| what short term climate change develops as a result of a strong counter current against the equilateral current between Australia and South America | el Nino |
| as a result of the northward flowing Peruvian current, the western coast of South America usually experiences cool,dry weather; how does this change as a result of the short term climate change in the previous question? | it could heat up the air near the water then move to South America or to Australia |
| what process is responsible for transferring energy from the air near Earths surface to higher levels in the atmosphere and is often represented by circulating arrows? | convections |
| what do we call the process by which energy is transferred from the sun through electromagnetic waves to warm Earths surface? | the process that energy is transferred |
| what is a meander? | a curve or a bend in a stream channel |
| considering that a meander has both inside and outside curves, where does deposition occur? | the outside of the meander |
| where does erosion occur? | occurs around the curves |
| what is infiltration? | precipitation that has fallen on land surfaces enters the ground and becomes groundwater |
| what will happen if the rate of the precipitation exceeds the rate of infiltration? | runoff levels will increase |
| if a meander is straightened out, what will happen to the amount of deposition and erosion? | there is less deposition and erosion |
| as a streams velocity slows down, deposition of sediment begins to occur. in what order would the following sediments deposit if the stream continues to slow? silt, gravel, sand, pebbles, clay | gravel, pebbles, sand, silt and clay |
| what is porosity? | the percentage of open spaces between grams in materials |
| what types of soil grains permit high levels of permeability? | sand and gravel |
| can precipitation infiltrate the ground better when the soil is permeable or impermeable? | permeable |
| how does soil grain size affect infiltration rate? | it could affect by it infiltrating slowly or fast |
| place these materials in order of grain size smallest to largest. Coarse sand,silt,fine sand, pebbles | silt, fine sand, coarse sand, pebbles |
| what effect does fertilizer carried into a lake through runoff have on a lake? | helps speed eutrophication(plant growth) |
| historically speaking, how has Earths climate changed over time? | the temperature has progressively gotten warmer |
| which catastrophic weather event produces dust that can block solar radiation? | volcanoes |
| draw a stream with double meanders and label the curves in terms of where erosion and deposition will occur | the erosion is on the outside of the meander and the deposition is on the outside |
| what is permeabilty | the ability to let water pass through |
Created by:
cupcakesncookies6
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