Beach Management
Thin, narrow walls built to keep sand out of harbors.
what are jetties
these are built ALONG the side of a river to lessen flooding.
what is a levee
The upper level of soil where most crops are planted
A closed path through which electric currents travel
what is an electric circuit
an object that attracts iron and other metals
what is a magnet
beaches are slowly wearing away because of this
what is erosion
these are built ACROSS a river, allowing humans to control the flow of water down stream
what is a dam
Less fertile soil
what is the subsoil
Units of electricity
What are electric charges
when two electric charges are alike (+) and (+) then they will do this
what is repel one another
tall walls built at the end of a beach to lesson erosion
what is a sea wall
These are found in communities and can only prevent minor flooding
what are storm drains
Plowing in curved rows, protecting crops from the wind is this.
what is contour plowing
The continuous flow of electric charges
what is an electric current
a strong temporary magnet that uses electricity
what is an electromagnet
the dumping of new sand onto a beach
what is beach nourishment
a path for flood waters to go, without flooding nearby towns or cities.
floodways
crops planted in levels, allowing rain water to sink into each level
what is terrace farming
A type of circuit in which a current passes through each part, one after the other.
what is a series circuit
when electricity moves through a coil, it creates this
a magnetic field
beach nourishment is not a true solution because...
it doesn't solve the problem of erosion
swamps are better to handle flooding than a parking lot for this reason
swamps/ grass/ soil can absorb more water than cement
a natural resource that is made up of minerals and small rocks, water, gases, and organic matter.
what is soil
if a load does not power on, the circuit might be which? open or closed
what is open
an electromagnet has these two poles
what is a north and south pole