Thermal Characteristics Of Water

Thermal Characteristics Of Water

1. Are heat and temperature same or different?
They are different. Temperature is the measurement of kinetic energy. Heat is total energy

2. What is the heat capacity?

The number of heat units needed to raise the temperature of a body by one degree.

3. How is the capacity of water unique?
It is like a sponge. It is how much heat an object can absorb before it increases in temperature.

4. How does water temperature affect its density?
The warmer the water the less dense. The cooler the denser.

Energy Flows Though Ecosystems.

Energy Flows Though Ecosystems.

1. Examples of primary producers are, and how to they get their energy?

Plants, algae, and some bacteria use solar energy to produce organic plant material through photosynthesis. 

2. The second trophic level is made up of what creatures, and from where do they get their energy?

Herbivores—animals that feed solely on plants—make up the second trophic level. 

3. Why do predators make up the third trophic level?

Because predators eat herbivores and they comprise the third trophic level.

Surface Water and Global Temperatures

Surface Water and Global Temperatures

1- Thermal Inertia: San Francisco and NorfolK, Virginia area are the same Latitude, Why would you NV compare to SF, have warmer summers and cooler winters?

About half of this light reaches the surface, where it is converted to heat, then transferred into the atmosphere by conduction, radiation, and evaporation. the atmosphere, like the land and ocean, eventually radiates the heat back into space in the form of long wave (infrared ) radiation.




2- Describe the different ways temperatures are "moderated" on Earth without moderate temperatures, Earth could not support life as we know it.

Water takes much longer than air to heat up and also longer to cool because it has much higher specific heat. thus, on hot days, water (oceans, lakes and rivers) absorb heat, keeping the air something cooler. when the air gets cool, however water slowly releases heat to the atmosphere raising air temperatures. this is why temperatures along coast lines are cooler in summer and warmer in winter relative to inland areas. temperature varies.

The Chemistry of Water.

1. Describe how water molecules are bonded.

 In water, each hydrogen nucleus is bound to the central oxygen atom by a pair of electrons that are shared between them; chemists call this shared electron pair a covalent chemical bond. 







2. Describe how the positive and negative charges of water are distributed.

The H2O molecule is electrically neutral but the positive and negative chargers are not distributed uniformly. the electronic (negative) charge is concentrated at the oxygen end of the molecule.

3. Describe the chemistry of water that allows an insect to walk on water.

The water strider takes advantage of the fact that the water surface acts like an elastic film that resists deformation when a small weight is place on it.

 

4. What is unique about water and its density?

The distinction between molecules located at the surface and those deep inside is especially prominent  H2O owning to the strong hydrogen-bonding forces.

Sediment Cores & History.

1. Who is the author, and what is she researching?

       The Author is Alyson Santoro, and is a post doctoral researcher at Woods Hole oceanographic Institution, writes from off the coast of chile where she is studying microbes in the nitrogen cycle.

2. What technique did the researcher using that is especially good at recovering delicate sediments? 

       They use Multicoreing is especially good at recovering sediment samples 

3. What happens to the samples after it is located onto the ship?

        The look closely at the multibeam sonar images to find a relatively flat area of the bottom where the coring device an land.

4. What is the name of research vessel?

 The name of research vessel is Mellvie.

 

Essential Questions Economic Importance of Marine Sediments

1- What are some products that come from sediments?

Well... some products are building materials for roads and structures, toothpaste, paint, swimming pool filters and others.
2- How much of the world's energy comes from sediments?

About 36 % of the world's crude oil and 28 % of its natural gas will be extracted from sedimentary deposits of continental shelves and continental rises. Off shore drilling of hydrocarbons currently generates > $125 billion dollars.

3- How important is sand and gravel?

It's too important , because 1/3 of world's oil and gas reserve come from deposits within the sediments of continental margins. in addition to oil and gas sand and gravel valued at more than $510 million. this is about 1 % of world needs.

Reflection Mid-Term GoAnimate.

Well... I really think that we learned a lot, because in my case I didn't know how to use this program. After the demonstration that Mr. Blass gave us, I learned more than I know. I'll definitely practice more in the future to more easily use Go Animate.