Question | Answer |
Oceans influence what | weather and climate |
Important marine resources | food, oxygen, and natural resources |
Have humans seen much of the ocean? | no, very little |
Human effects on the oceans include | depleted fisheries, loss of marine environment, and pollution |
recording and describing ocean processes and contents | Oceanography |
biological and physical oceanography | 2 of the 4 main branches of oceanography |
Uses processes of science to find answers | Scientist |
Has made true exploration of the oceans possible | technology |
A body of knowledge an an organized method | Science |
Has improved and threatened human and other organism's lives | Science and Technology |
The most logical action society can take about the effects of science and technology | Prioritize the consequences to the environment in applying technologies |
Scientific process skills include | ID problem and predict outcomes, construct models, compare observations |
A hypothesis is... | Educated, scientific guess that you can test |
A Theory is? | a scientific explanation with supporting evidence |
Polar molecule | has a positive and negative charged end |
What is a Solution? | 2 or more substances with evenly dispersed molecules |
Salinity | inorganic dissolved solids in seawater |
Seawater's colligative properties | characteristics caused by the dissolved solids in seawater |
Principle of constant proportions | Regardless of the salinity of seawater, the proportion of inorganic dissolved solids remains the same relative to each other. |
Besides hydrogen and oxygen, this is the most abundant chemical in seawater. | Cloride |
Are the oceans becoming more or less salty? | Neither |
What causes pH to change with depth? | Carbon dioxide |
A biogeochemical cycle | elements and compounds moving continuously to and from organisms and the Earth |
Fundamental to all life form | Carbon |
Organisms use nitrogen for? | the formation of organic compounds |
An important component to DNA and nucleic acids | Phosphorus |
Used for shells and skeletons in marine organisms. | Silicon |
Used to construct specialized proteins | Iron and trace metals |
Movement of materials by diffusion | Passive transport |
Movement of materials from low to high concentration | Active transport |
These can control the water concentration in their cells | Osmoconformers |
These can change with the salinity of surrounding water | Osmoregulators |
Cold water_____when added to hot water. | Sinks |
Cold water is more____than warm water. | Dense |
How does science progress? | through revisions of theories based on new evidence |
What percentage of the Earth is covered with water? | 71% |
The world's oceans provide what percent of the biosphere (where organisms live)? | 99% |
Bonding of + and - electrons in Polar molecules | Hydrogen bond |