Reviews for Finals

All 6th, 7th and 8th graders have now received review sheets for their final exams. These are due on Wednesday before final exams. They must use prior tests and quizzes to answer the questions on the review sheet. This will be what they study from for their exams on Thursday and Friday.

Here is the 8th grade review sheet:
Final Exam Review Sheet
Due Wednesday
Use old quizzes and tests to find this information (except for ch 4)

Chapter 1
What percent of the world covered in water?

The following carries the least amount of water on earth.

How much water is indirectly used to make a hamburger?


You are able to find water in all three forms here on earth because


The heat energy needed to change water from solid to liquid is called


During freezing and melting, energy is changing the _____________ of the water but not the ________.


It requires ________ energy to change ice (solid) into a liquid than it does to change liquid into a solid.

The amount of heat needed to change water from liquid to gas is called the


Which of the following are you experiencing if you feel a chill when you get out of the pool?

The amount of mass in a unit of volume is called

Therefore, warm water has a ______ density than cold water and will _____________ if put in a container with cold water.


Therefore, when you go swimming in the summer and dive down to where the water is cold you are feeling the __________________ and _____________ water below.


A polar molecule is ___________.


What caused the water to bubble up on the penny and not spill over?


Water has high specific heat. This means that:


Molecules are farther apart when they are ___________than when they are ___________.


Because of the set up of the water molecules in ice, lakes freeze from the _____________which ______________ .


When we collected the water in the bags on the trees, we are collecting water from _________.


When water finishes penetrating the soil it enters this layer. This is the initial layer of rock that a well penetrates. Spaces here are mostly filled with air.


This makes up the water in lakes, streams, and rivers:


What is the term that describes the water that is found in the pore spaces between rock and soil particles?


What is the term that describes the speed at which water moves through earth's materials and soil particles?


What recharges groundwater?

Through which material does water move the fastest?

How much drinking water comes from ground water in Michigan?

Chapter 2
What kind of pollution can be pinpointed to a certain location such as a pipe?

What kind of pollution can not be pinpointed to a certain location such as a pipe; instead it comes from roads, driveways, lawn runoff, etc?

What was the first attempt to regulate water pollution?



What is one suggestion to help reduce fertilizer use in your yard?


Even though many kinds of pollution have been reduced this kind of pollution still remains in the rivers and streams.

Use these words-fill in the blanks:

Headwaters mouth bar meandering upstream alluvial fan sub-watershed watershed divide floodplain main channel downstream load

1. ______________________ Word for a stream with many curves

2. ______________________ an area that separates watersheds

3. ______________________ name for earth material carried by a stream

4. ______________________ pile of sand and gravel deposited in a streambed

5. ______________________ similar to a delta but they form where streams empty onto flat land

6. ______________________ flat plain adjacent to a stream channel that is periodically covered by flood overflows

7.______________________ towards the mouth of a stream or river


8. ______________________ outflow of a river into a larger river, lake or ocean

9. ______________________ land area surrounding a tributary

10. ______________________ source of a beginning of a river

Wastewater treatment Test:

What are the five stages (in order) for wastewater treatment?


During which stage is the clear liquid on top of the biomass removed from the tank?


What do we call the stage that is in the time after the clear liquid is removed but before the tank is refilled?

Where does the decanter pull liquid from in the tank?

Nitrification- know what order the nitrogen products go in (list below)


Denitrification-know what order the nitrogen products go in (list below)

Plants use a combination of physical and chemical processes . Plants use preliminary treatment to remove ____________ and secondary treatment to remove _______________.
A) large debris and grit; dissolved organic material
B) dissolved organic material; large debris and grit

Put the following in the correct order that leads to eutrophication. Number them 1-4.
____________lake becomes choked with weeds
____________weeds die and decompose causing the lake to fill in slowly with sediment
____________domestic wastes contain a lot of nitrogen and phosphorous
____________wastes discharged into a stream or lake and act as fertilizer; plant growth increased

Activated sludge is made mostly of____________.
a) domestic waste b) microorganisms c) sticks and debris d) air

At the wastewater treatment plant, after the water leaves the reactors it is allowed to return to the ground water. Through what must the water travel through to get to the ground water. (this is something they have made special for the water to penetrate)

When Frank tested for nitrates and phosphorous in the water sample, how did he tell if something was present in the water?


These organisms are characterized by their tail which extends from their round or elliptical cell configuration; mobility by whipping their tail


Apparent when there are a large number of bacteria in the activated sludge; their presence is generally indicated of a process that is approaching the optimum degree of treatment; characterized by rotating hair-like membranes that cover most/all of the cell membrane


With other activated sludge organisms these are the smallest; only aerobic so are only where D.O. is plentiful; may attach to particles or swim freely; most abundant when the activated sludge is older and indicates a high level of treatment; feed on bacteria, algae, protozoa and small particulate matter in the waste


Which of these is correct?
b) physical; where you rely on living organisms to remove pollutants and chemical where you rely on screening, sedimentation, and filtration to remove pollutants
c) chemical; where you rely on living organisms to remove pollutants and physical where you rely on screening, sedimentation, and filtration to remove pollutants


Look at CH 4 sec 1-3 notes, sec 2 quiz, salty seas sheet

When scientists investigated the oceans to see how much salt is going in and leaving, what is the MAXIMUM age the ocean could be?


What do we call the process of removing salts from the water?



What similar idea did your book and Bible share about how the oceans were formed?
Currents that move clockwise would be found where?

What is responsible for the shifting of winds and currents from their expected path that is caused by the earth’s rotation?


East coast currents are _____________ while west coast currents are __________. This is because the east coast currents come from the equator and head north while the west coast currents come from the north and head south.


Which one of the following is a real life example of what we tried to show in class with the saltwater dyed red that slowly crept across the floor of the freshwater in the container?


The highest point of a wave is it _______ while its lowest point is the ________.


The distance between two crests of a wave is called its ___________.


Why do waves break?

What is the primary cause of all waves?