Scientific Method
Pollution
Watersheds
Estuaries
Extra
100
What is a hypothesis?
An educated guess
100
Loose sediment coming from unknown construction sites & neighborhoods is what type of pollution?
(point or non-point)
Non-point
100
The land area that supplies water to a river system is called a...
Watershed
100
What is brackish water?
Mix of salt & fresh water
100
What is the best tool to measure turbidity?
Secchi Disk
200
What is an independent variable?
The variable that you change on purpose
200
Algae blooms are caused by what type of pollution?
Nutrients (fertilizer)
200
Another name for a watershed is...
Drainage Basin
200
The Chesapeake Bay is an ______ because it is a place where fresh & salt water mix.
Estuary
200
What is water clean enough to drink called?
Potable water
300
Is this Qualitative or Quantitative data?
The plant is 20 inches tall and has 4 leaves.
Quantitative data
300
Which will NOT pollute a water way?
a. erosion from runoff
b. trees & tall grass
c. chemical from a factory
d. fertilizer from a farm
b. trees & tall grass
300
Where is most of Earth's freshwater available for human use stored?
Lakes & Rivers
300
Low oxygen zones are dead zones also known as _______ zones.
Hypoxic zones
300
What does pH measure?
Acids & Basis
400
Identify the Dependent Variable:
If I gave the plant 1 hour of light a day, then the plant will not grow to be healthy.
Plant will not be healthy
400
What is the biggest source of pollution in the Chesapeake Bay?
Polluted runoff
400
What is a divide?
Separates watersheds
400
Which of these is NOT a function of wetlands?
They provide shelter for wildlife.
They help remove pollutants from the water.
They help reduce erosion of the land.
They are excellent areas for disposing waste.
4. They are excellent areas for disposing waste.
400
What is a variable that changes during the experiment?
Dependent variable
500
Identify the Independent Variable:
If I set the water temperature to 0 degrees, then the water will freeze.
Water temperature
500
The 3 major categories of pollution are...
Nutrients, Sediments & Toxins
500
Label the watersheds: Blue =, Green =, Red =
Blue = Chesapeake Bay
Green = North Carolina Sound
Red = Gulf of Mexico
500
Select all statements that are TRUE regarding estuaries.
1. It is okay to dump trash in an estuary
2. Freshwater and saltwater mix in an estuary
3. Chesapeake Bay is the largest estuary
4. Very few organisms live in an estuary
5. Estuaries provide habitat for many living things
2. Freshwater and saltwater mix in an estuary
3. Chesapeake Bay is the largest estuary
5. Estuaries provide habitat for many living things
500
Rivers, lakes, aquifers, and reservoirs make up what percent of all the water on the planet?
1%