Unit 4 Progress Check: FRQ (APES) Questions & Answers
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Unit 4 Progress Check: FRQ
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Unit 4 Progress Check: FRQ
(ii) An area receives significantly less precipitation over a period of time than it typically does. Describe one negative environmental effect in the area as a result of the decrease in precipitation. - ANSWERS• drought leads to prolonged shortages in the water supply.
(a) A period of precipi...
Unit 4 Progress Check: FRQ (APES)
Questions & Answers
(ii) An area receives significantly less precipitation over a period of time than it typically
does. Describe one negative environmental effect in the area as a result of the
decrease in precipitation. - ANSWERS• drought leads to prolonged shortages in the
water supply.
(a) A period of precipitation is one of the short-term conditions in the atmosphere
referred to as weather.
(i) Identify the layer of Earth's atmosphere where the circulation and mixing of liquids
and gases produce weather. - ANSWERS(i): the trophosphere
(b) The model below represents a watershed in a mountainous area.
(i) Describe how the geology in a watershed affects the groundwater recharge. -
ANSWERS• sedimentary rock such as limestone or sandstone is highly permeable and
is a good aquifer because water enters quickly.
(ii) The lake at point A in the diagram is one of the primary points of recharge for the
aquifer. Assuming the maximum rate of recharge is occurring in the aquifer, identify the
particle type that would most likely make up the majority of the soil. - ANSWERS(ii):
sand
(ii) Describe one characteristic of soil that would allow for maximum rate of recharge of
the aquifer. - ANSWERS• the soil should have a high percentage of sand because sand
is very permeable.
(c) Local officials are concerned that agricultural fields at site B are increasing
sedimentation in the river because of soil eroding from the fields. They hire an
environmental consulting company to perform a study to determine if this is true. The
company marks out two one hectare plots at point B and point C in the diagram. The
characteristics of the land in both plots are identical except that plot B is covered by
agricultural fields and plot C is covered by undisturbed forest. Rain gauges are set up at
the up-slope edge of the plots, and devices that collect eroded soil are set up along the
down slope edge of the plots. The environmental consultants hypothesize that more soil
will be eroded from plot B then from plot C. Data are collected at the rain gauges and
soil collection devices at the end of each month for a year.
(i) identify the dependent variable in the study. - ANSWERS(i): the amount of soil
collected in devices (at the end of each month)
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