test 1 Flashcards
what is the purpose of science
unmasks the mysteries of the world, natural phenomena (physical, biological, chemical, geological)
another purpose of science
use the understanding of the world to improve the quality of life
science is a discipline that depends on
observation, experimentation, and analysis
can a scientific experiment prove a fact to be true
they cannot prove facts to be true, but they disprove ideas. we can find things to be untrue and then we settle for best explanation
theory is different from a hypothesis because
an explanation of a variety of natural phenomena that has met many observational and experimental tests
a hypothesis
an educated guess based on available information.
a hypothesis has to be
testable by experiment, and must be falsifiable.
a hypothesis can
be supported or rejected, not proven to be true
would a theory, law, or hypothesis be the easiest to be disproven
a hypothesis
what are the steps of scientific method
hypothesis, study design, data collection, data analysis, conclusion
how many observations
at least three. the higher number the more accurate, but not always practical.
what percent of earth is covered by water
71%
what percent of water are in the oceans
97%
2% of water where
glaciers and polar ice caps
0.1% where
surface water
what are the 5 oceans
arctic, pacific, atlantic, southern, and indian ocean
what is the largest ocean
pacific
what is the smallest ocean
arctic
what is the deepest ocean
pactific
what is the most shallow ocean
arctic ocean
what are some of the influences oceans have
atmospheric gas concentrations, water distribution, heat balance, weather systems and climate, is the mother of life
coast def
where the ocean meets the land
coastal waters
overlie the continental shelf
what influences coastal processes
wave energy, its direction, and its intensity.
what is the general depth limit of coastal waters
generally less than 200 m deep
what is the landward limit
highest point reached by the tide
seaward limit
the point where waves no longer significantly interact with the seabed