Units & Prefixes
what is the SI unit of time
seconds
An idea, event, or object can be represented by a __________ to help people better understand it.
model
factor that is manipulated to change the dependent variable
independent variable
volume formula
l x w x h
SI unit for temperature
Kelvin (K)
What are the 2 different units for density?
g/mL or g/cm3
studying the effect of one thing on another in order to test a hypothesis is a/an _________
experiment
graphed on the y-axis
dependent variable
density formula
d = m/v
an explanation of things or events based on knowledge gained from many observations and investigations
theory
What is the SI prefix meaning 0.01
Centi-
A factor that changes from the manipulation of the independent variable
dependent variable
a standard for comparison
control group
If a rock is dropped in a graduated cylinder and the water rises from 10 mL to 25 mL, what is the volume of the rock? (include correct unit)
15 mL or 15 cm3
derived unit of volume
cm3
What is the amount of material in an object?
mass
a rule or principle that describes what happens in nature
scientific law
3rd step of scientific method
form hypothesis
formula converting kelvin --> celsius
K - 273
What measure is different on the moon than on earth?
weight
What is the worldwide system of measurement called?
SI units
a factor that does NOT change in an experiment
constant
Mrs. Pickett wants to know if creating your own study guide will increase students' physical science grade.
What is the dependent variable?
physical science grade
formula converting Celsius to Fahrenheit
oC x 1.8 + 32
convert 300 km to m
300,000 m