The Science of marine Biology and the metric system

marine biology

the study of organisms that live in the sea, including all water that has some degree of salinity, like the estuaries at river mouths

is marine bio a separate science?

no it is an applied field of science

charles darwin

sailed the HMS Beagle as a naturalist and we still use his barnacle research today

captain James cook

sailed around the world with his crew and became 1st Europeans to view the antarctic ice fields, Hawaii, Tahiti, and other Pacific islands

Edward Forbes

he discovered that species on the seafloor vary greatly depending on depth; a fundamental principle of Marine Bio

challenger expedition

1st major exploration devoted to the study of Marine organisms. the crew discovered thousands of species previously unsubscribed and publishes 50 volumes of info from the data collected over the next 19 years

remote sensing

satellites are used to study large expanses of the ocean surface

sonar

used to map seafloor depths and formations

scuba

used for the study of Marine environment for longer periods and at depths otherwise unavailable to humans

remotely operated vehicles (ROVs)

allows for direct exploration of the Marine environment when scuba is not an option

scientific method

a systematic way of testing ideas

What is the most important part of the scientific method?

need to observe nature

what is a hypothesis?

a testable statement constructed from observations and reasoning, both induction and deduction

How must the hypothesis be worded?

so that it is testable by scientific means

variables

anything that can change

How many factors/ variables can a researcher look at during one time?

1

controlled variables

parts of the experiment that you can try and keep constant throughout an experiment so that they wont interfere with your test

independent variable

(x) this is the variable YOU CONTROL

dependent variable

(y) this is the variable YOU MEASURE

k

kilo

H

hecta

D

deka

B

base unit (m,L,g)

d

deci

C

centi

M

milli