Unit 4 Test APES MC

A farm is experiencing extensive crop loss due to high rains causing overly saturated soils. Which of the following approaches would best help the farmer alleviate the problem? A Fertilizing the area with manure to eliminate the need for inorganic chemical fertilizers B Amending the soil with clay to increase the water-holding capacity of the soil C Amending the soil with sand to increase the permeability of the soil D Using contour plowing to decrease soil erosion

Amending the soil with sand to increase the permeability of the soil

Which of the following best describes a transform boundary? A An area where two tectonic plates move away from each other B An area where two tectonic plates slide past one another C An area where two or more tectonic plates collide D An area where two or more tectonic plates fuse together at a suture zone

An area where two tectonic plates slide past one another

Which latitude shown on the diagram above experiences 24 hours of daylight on December 21?

Antarctic pole, bottom point

Which of the following shows the approximate concentration of CO2 , N2 , and O2 in dry air?

CO2 1%,N2 78%,O2 21%

Chemical compound responsible for ocean acidification in the open oceans of the world A Nitrates (NO3−) B Chlorofluorocarbons (CFCs) C Nitrogen oxides ( NOx) D Carbon dioxide (CO2)

Carbon dioxide (CO2)

This area is most susceptible to erosion, leading to increased suspended solids and increased turbidity downstream.

Crop field

A team at a university in Pennsylvania has concerns about the health of streams in a watershed because of the various land uses in the area. There has been an increase in road repair work, and the area has many dairy farms. Which of the following would be most effective at preventing sediment runoff into the streams of the watershed? A Have construction crews steepen the slopes of the valleys of streams near roadwork zones. B Maintain zones of grass at least 100mwide on the sides of streams in the area. C Construct at least one dam on a stream in the watershed to improve flood control. D Shift from dairy farming to corn planted in agricultural fields located within 100mof streams.

Maintain zones of grass at least 100m100m wide on the sides of streams in the area.

Scientists are looking for new locations to generate electricity using geothermal energy. Which of the following locations would be the best choice for a geothermal energy generating plant? A Near tectonic plate boundaries B Near fossil fuel resources C Near the equator D Near warm ocean currents

Near tectonic plate boundaries

The water-holding capacity of soil is LEAST likely to be affected by the addition of which of the following? A Clay B Humus C Manure D Pesticide E Sand

Pesticide

Corn is a crop that grows best in soil that drains well. Which of the following soils is best suited to grow corn? A Clay because it has at least 45%clay so it absorbs water very well. B Silt loam because it is about 80%silt and has low amounts of sand. C Sandy loam because it has large amounts of sand and less than 20%clay. D Silty clay loam because it has all three soil components.

Sandy loam because it has large amounts of sand and less than 20% clay.

Which of the following is the best method for preventing soil erosion in an agricultural area? A Slash-and-burn agriculture B Integrated pest management C Monocrop farming D Terrace farming

Terrace farming

El Niño, a periodic warming of ocean surface waters, occurs in which of the following regions? A Tropical East Pacific B Gulf of Mexico C Arctic North Pacific D Temperate West Atlantic E Tropical Indian Ocean

Tropical East Pacific

This layer of Earth's atmosphere has the highest density of any atmospheric layer and contains most of the water vapor in the atmosphere. A Troposphere B Stratosphere C Mesosphere D Thermosphere

Troposphere

The primary cause of Earth's seasons is the A constant tilt of Earth's rotational axis with respect to the plane of its orbit around the Sun B changing distance of Earth from the Sun at different times of the year C periodic wobbling of Earth on its axis of rotation D changing relative positions of Earth, its Moon, and the Sun E periodic changes in solar energy output

constant tilt of Earth's rotational axis with respect to the plane of its orbit around the Sun

Most of the Earth's deserts are at approximately 30° latitude, north and south, because these latitudes are characterized by A generally warm ocean currents B predominantly low atmospheric pressure C descending dry air currents D slow-moving jet streams E enhanced solar radiation

descending dry air currents