303 MidTerm Cram / Test Review!

• 1st Activity: QUIZLET (in Math computer lab)– You should ONLY be on the quizlet site /link on my wiki

• 2nd Activity: Study Guide– What questions do you still have?– Help answer each other’s questions

• 3rd Activity: Game!

Review Game

• We’re going to review our 2 major tests with a “relay” format

• Teams of 4; each has a, b, c, d answer cards• A question will be projected.• Decide the best answer• Within time frame (it’s not a race!), get your

answer card into the bin

What do we call the other environmental factors that we want to keep exactly the same between the two groups we are testing?

a. Controlled Group b. Datac. Constants d. Independent Variable

What is the independent variable

a) Population sizeb) Species typec) Water depthd) time

Mrs. Loch is always tired because she has three kids. This is an

example of…

A. An inferenceB. An observationC. A hypothesisD. A judgment

A scientific study showed that the depth at which algae were found in a lake varied from day to day. On clear days, the algae were found as much as 6 meters below the surface of the water but were only 1 meter below the surface on cloudy days. Which inference best explains these observations?

A.Nitrogen concentration affects the growth of algae.B.Precipitation affects the growth of algae.C.Light intensity affects the growth of algae.D.Wind currents affect the growth of algae.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a ____________.

A.ControlB.ConstantC.experimental variableD.dependent variable

A student decided to set up an experiment to see if cats preferred skim milk or 2%milk. She put out a cup of each type of milk for 5 kittens and then measured how much the kittens drank over the course of a day. The same kittens were used and the milk was served at the same temperature.

The type of milk is the…A. Independent variableB. Dependent variableC. ControlD. Constants

A student decided to set up an experiment to see if cats preferred skim milk or 2%milk. She put out a cup of each type of milk for 5 kittens and then measured how much the kittens drank over the course of a day. The same kittens were used and the milk was served at the same temperature.

The temperature of the milk is the…A. Independent variableB. Dependent variableC. ControlD. Constant

• The first organism in a food chain must always be a:a. carnivore b. herbivorec. decomposer d. producere. The sun

In a food chain below, 14,309 calories of energy is stored in the PRODUCERS. How much energy is available for the FROG? Hint: Think about how much energy gets transferred at each step.

algae –––––> insect ––––> frog –––> snake ––––> fish

a. 114,309 cal b. 14,309 cal c. 1,430.9 cal

d. 143.1 cal e. 14.3 cal

Soil is defined by its particle size. Which of the following best fits this fact?

a. Sandy soil is the best at holding water. b. Clay soils need to be watered less often than

sandy soils.c. Clay soils allow the most water to infiltrate.

COMPOST is best described as:

a)decomposed plant matter that can be used as humus

b)a soil additive made from fossil fuelsc) a synthetic fertilizerd)a primary nutrient needed by plants

You are sent to a country where people are dying of starvation. Your job is to teach them how to survive on their own without any imported food. In order to provide food for the largest number of people, you should teach them how to:

a. raise cattleb. hunt predatory birdsc. plant and irrigate cropsd. none of the above

Integrated pest management can include chemical pest control, _________________, and a mix of farming methods.

A.Sustainable agricultureB.AquacultureC.Biological pest controlD.Soil conservation

Which of the following is NOT an example of how farming has

changed in the last 100 years:

A. Going from using manure fertilizer to synthetic fertilizer

B. The introduction of chemical pesticidesC. Planting monocultures – one crop instead of

a variety of crops at one farmD. Using less machines and more manpower

Scientists hope to use genetic engineering techniques to:

a) develop crops that are resistant to attacks by a particular pest.

b) breed insects that prey upon important pests that threaten food crops.

c) make organisms more desirable.d) all of these.

Farmland may become desertified if

A. Many pesticides are used.B. There are many seasons of heavy rain.C. There is no fertile soil left to grow plants due to

erosion.D. All of the above

Biomagnification refers to :

a.“the rule of 10%” where only a certain amount of energy is available to the next trophic levelb.A wastewater treatment step where bacteria is added to the sewagec.Creating superpests by the overuse of GMOsd.The accumulation of toxins within the food chain because 100% gets passed on

• Water covers approximately _______ of Earth’s surface, of which ______ is freshwater.

a. 50%...2% b. 80%....10%c. 95%....20% d. 75%....3%

Of the available surface water on the planet, the greatest percentage is used for:

a. industryb. agriculture c. manufacturingd. showering and personal use

One reason groundwater pollution is difficult to clean is that

A. The location of underground storage tanks is not always known.

B. Pollutants stick to the rocks that make up aquifers.

C. Runoff contaminates the water supply.D. None of the above.

Why are macroinvertebrates good indicators of water quality?

A. They are abundantB. They don’t move from one area so if the

water is polluted they dieC. Some are sensitive to pollution while others

are notD. All of the above

What is the most practical way to make sure everyone on Earth has enough freshwater to meet their daily needs?

a. desalinationb. enforce methods of water conservationc. drill more well into aquifersd. build more dams

During which of the following does water move in a direction different from the others?

a. percolation b. transpiration

c. infiltration d. precipitation

Which of the following INCREASES the likelihood of flooding?

a. desalinationb. building damsc. wastewater treatment plantsd. removing water absorbing vegetation

Nutrients and animal wastes from farms may decrease__________ in water

a. nitrogenb.dissolved oxygen c. sedimentd. decomposing bacteria

What is the correct order for the steps of cultural eutrophication?

1. rapid increase in algae growth2. fish kills due to lack of oxygen3. introduction of nutrients (nitrogen and/or

phosphorus)4. bacterial decomposition of dead algae

A. 4, 2, 3, 1B. 1, 4, 2, 3C. 3, 1, 4, 2D. 3, 4, 2, 1

The LEAST likely cause of cultural eutrophication in Sandy Run Creek would be:a) Fertilizer run-off from Lu-Lu Country Clubb) Agriculture run-off from Ziegler’s Rose Farmc) Leaking gasoline tanksd) Sewage effluent from Abington Wastewater

Treatment Plant

Surface water becomes groundwater when ita)Evaporates from a body water into the

atmosphereb)Condenses to form drops of liquid waterc) Percolates through the soil into an aquiferd)Flows onto the ground through a spring

When neighborhood residents noticed a large number of dead fish in a local creek, they traced the problem to a nearby gas station. It turned out that a tank of anti-freeze developed a leak. This is an example of

a. Point pollutionb. Thermal pollutionc. Non-point pollution d. Groundwater pollution

What is the correct order of the path rain takes when it falls at UDHS?

a) Schuylkill River, Wissahickon Creek, Delaware Bay, Delaware River

b) Wissahickon Creek, Delaware Bay, Delaware River, Schuylkill River

c) Wissahickon Creek, Schuylkill River, Delaware River, Delaware Bay

d) Schuylkill River, Wissahickon Creek, Delaware River, Delaware Bay

The best indicator of water quality is:a. Algaeb. Fishc. Macroinvertebrates d. Temperature

Your little brother is trying to reunite his fish Scuba with his ocean friends by flushing him down the toilet. This won’t work b/c at a wastewater treatment plant…

a. The chlorine added to kill the bacteria would also kill Scuba

b. Scuba would get caught by the bar screen and sent to the landfill

c. At the end of the treatment process, Scuba would be into a river, not the ocean

d. The oxygen added during aeration would cause Scuba to die from supersaturation

Most of the earth’s fresh water is located in:

a. Glaciers and ice capsb. Groundwater

c. surface water d. the oceans

Which step is optional at a waste water treatment plant?

a) Adding chlorineb) Removal of phosphates & nitratesc) Aerationd) None are optional