## [answered] Mid-term Review 1. As a result of the Law of Conservation o

Hi, I was wondering if you could help me again.. i need help reviewing for my midterm and have a few questions that i am not entirely sure about.

Mid-term Review

1. As a result of the Law of Conservation of Energy, a body of

water cannot warm up more than the amount of heat added to it.

Formulate an experiment to test this hypothesis using a sample of

water in a beaker. Which method would best test this hypothesis?

a. Measure the amount of thermal energy present in the

beaker after warming the water using a heat source. Then

measure the amount of thermal energy present in the

water after heating.

b. Measure the amount of thermal energy present in the

beaker and the amount of thermal energy present in the

water. Then heat the water using a heat source and

measure the amount of heat released by the heat source.

c. Measure the amount of thermal energy present in the

beaker and then add warm water to the beaker. Then

measure the amount of energy released by the heat

source and find the difference.

d. Measure the amount of thermal energy present in the

beaker and the amount of heat added by a heat source.

Then measure the amount of thermal energy present in

the water after heating and find the difference.

I thought A was the best answer choice.

6. An underwater scuba diver looks up toward the water's surface.

She sees a buoy floating on the surface and notes its location.

She then realizes that the buoy may actually be in a different

location because she is looking at it from underwater. What is the

wave property that best explains this phenomenon?

a.

b.

c.

d. Absorption

Diffraction

Reflection

Refraction I thought D was the best choice, however I was between B and D. 9. Loggerhead turtles need an incubation temperature between

about 28 and 32 degrees Celsius. When temperatures are higher,

more female turtles are produced. When temperatures are lower,

more males are produced. When the temperatures exceed this

range, the offspring don't develop and die. Scientists have

observed that, in Florida, 90 percent of the turtles born are

females. If global climate change continues, what is the best

prediction that can be made based on these observations?

a. Male turtles will move to cooler waters, leaving females

in warmer regions.

b. More female turtles will find mates, so the population

will increase in size.

c. The turtle population will become smaller over time.

d. The turtle population will become entirely male.

I assumed the population would become smaller due to the fact

that temperatures exceed the range of 28-32 degrees Celsius the

offspring cannot develop and die.

14. Waves transfer energy in the ocean environment. How do

waves most likely affect the abundance of aquatic organisms in

the ocean?

e. Waves decrease carbon dioxide availability in the

ocean, decreasing abundance.

f. Waves decrease oxygen availability in the ocean,

decreasing abundance.

g. Waves increase carbon dioxide availability in the ocean,

increasing abundance.

h. Waves increase oxygen availability in the ocean,

increasing abundance.

I was not sure what the answer was to this.

18. Tidal fluctuations can affect the abundance of aquatic

organisms in an ocean environment. Which tide would have the

least impact on an abundance of aquatic organisms? a. Diurnal

b. Mixed

c. Neap

d. Semi-diurnal

I was not sure what the answer to this was.

26. The diagram below shows two waves. At which letter (A?D) on

34. Why does the ocean appear blue in color?

a.

b.

c.

d. It

It

It

It is

is

is

is absorbing blue light.

diffracting blue light.

reflecting blue light.

refracting blue light. I assumed that it is reflecting the blue light. 36. Using the graph below, indicate what type of tide occurs in

the Gulf of Mexico. a.

b.

c.

d. Diurnal

Mixed

Semi-diurnal

coastal areas affect the abundance of aquatic organisms living

there?

a. Fewer aquatic organisms live in coastal areas because the

tides require organisms to constantly adapt to changing

conditions.

b. More aquatic organisms live in coastal areas because

land during low tide.

c. More aquatic organisms live in coastal areas because tidal

processes help maintain a more constant water temperature

compared with other ocean areas.

d. Fewer organisms live in coastal areas because there is less

food and oxygen available compared with other ocean areas.

I am guessing that fewer organisms live there because there is

less food, so option D seems like the best option to me.

52. Waves are caused by wind. How would waves most likely

affect the abundance of aquatic organisms living near the shore?

a.

b.

c.

d. Waves

Waves

Waves

Waves bring nutrients to the shore.

create nutrients along the shore.

move nutrients to deeper water.

move nutrients to shallower water. I guessed it was D because the waves bring lots of water to the

shore which most likely transports nutrients as well.

63. Most aquatic organisms are adapted to a narrow range of

salinity. Why must aquatic organisms living in coastal areas be

adapted to survive in both low and high salinity?

a. During high tide, freshwater mixes easily with ocean water,

lowering salinity. b. During low tide, the ocean water becomes concentrated,

increasing salinity.

c. Ocean currents bring in deep-ocean water with high salinity

concentrations.

d. Temperature fluctuations can cause changes in the salinity

levels of the water.

I chose C because it seemed to be the best answer.

84. A group of scientists build a net along a section of the river to

separate a group of foreign fish species from the rest of the river.

They wish to determine whether their experiment is a closed

system by placing a colored dye in the fish's habitat and

observing whether the dye escapes from the enclosure. Could this

experiment determine whether the system is closed or not? Justify

Yes, I think this could justify if this was a closed system or not

because a close system only allows energy in and out not matter

and dye is matter.

85.Many surface military ships use sonar as one method for

detecting submarines. How would the temperature, density, and

salinity of water affect the usefulness of sonar, and why?

If the temperature of the water is too cold, the sonar clicks could

have trouble due to the sound waves not being able to travel as

fast, however if they are looking below 1,000 meters it is alright

because the pressure of the ocean compensates for the cold

water is denser then the sound will travel faster because sound is

a mechanical wave, vice versa if the water is less dense then the

sound will travel slower. I do not know how the amount of salinity

effects sonar.

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