Physical Science in Your Life
Physical science studies
chemistry and physics
List six of the most common units of time
seconds, minutes, hours, days, months, and years
Inquiry is
learning by asking questions.
Process that begins with a hypothesis and proceeds to prove or change the hypothesis comparing it with scientific evidence.
Scientific Method
what is the first step in analyzing a graph?
identify what the graph represents (title)
The number of seconds in 3 days
259,200 seconds
Which is greater, 1:30 minutes or 90 seconds?
The quantities are equal.
When detectives handle a case, they must use this to identify the how and what events occurred.
deduction
the scientific method starts with
an observation
which is the x-axis?
the one that runs left to right.
The sports car because it has less mass.
Distance is measured in units of
length
Rules that are obeyed by every detail or everything that occurs in the universe
Natural laws
a hypothesis that correctly accounts for all of the evidence in an experiment is
a potentially correct theory
the y-axis shows this variable
dependent variable
Matter is defined as
anything that has mass and takes up space
List the following in order from smallest to largest:
1 millimeter, 1 kilometer, 1 meter, 1 centimeter
1 millimeter, 1 centimeter, 1 meter, 1 kilometer
In inquiry, getting the right answer is not the most important thing. What is most important?
Having possible answers that can be tested
When is evidence considered scientific?
when it is objective and repeatable
variable that goes on the y-axis
dependent variable
1,000 meters
An astronomical unit is __________, which is _________ kilometers.
the distance between the earth and the sun
(150 million km)
The most important thing you will learn in this course involves inquiry, what is it?
Problem-solving
for scientific evidence to be communicated clearly you must
be clear when it comes to values and units
If a scientist is studying the effect of brightness on a moth's attraction to light, what is the independent and dependent variable?
independent: brightness of the light
dependent: moth's attraction to light