Scientific method
What is a hypothisis
A hypothesis serves as a basis for determining
what data to collect when designing an
experiment.
What is wafting?
Waving a vapor at a distance for smelling!
what does the base of the microscope do?
It supports the microscope
How does the CONTROL GROUP setup in an experiment differ from the other setups in the same experiment?
It tests a different hypothesis.
It has more variables.
It does not receive the experimental treatment (Independent Variable).
It utilizes a different method of data collection.
3
What do you use a fire blanket for?
put out a small fire
The highest possible magnification that can be
obtained when using this microscope is
400x
A biologist formulates a hypothesis, performs experiments to test his hypothesis, makes careful observations, and keeps accurate records of his findings. In order to complete this process, the biologist should:
adjust the data to support the hypothesis.
eliminate data that do not support the hypothesis.
write a research paper explaining his theories before performing his experiments, in order to gain funding sources.
evaluate the findings and, if necessary, alter the hypothesis based on his
4
Which statement describes two unsafe laboratory
practices?
A) The flame is too high and the test tube is
unstoppered
B) the test tube is stoppered and the student is not
wearing goggles
C) the test tube is unstoppered and the student is not
wearing goggles
D) the beaker has water in it and the flame is under
the tripod
D
where is the ocular lens located on a microscope?
Ocular is what you look through at the top of the microscope.
Which statement about the use of independent
variables in controlled experiments is correct?
A different independent variable must be used
each time an experiment is repeated.
State one safety procedure that should be followed
when you are dealing with a harsh chemical.
Always wear goggles and an apron.
A compound microscope has four objectives labeled
4×, 10×, 43×, and 97× . Which objective, when used
in combination with a 10× ocular lens, provides the
largest field of view?
97x
Make up a Hypothesis using if-then statements.
If___________, Then_________.
Using one or more complete sentences, describe one
safety procedure the student should be following no matter the circumstance.
Always wear goggles and an apron.
What magnification does my microscope need to see bacteria?
400x