Variables
The variables you keep the same through out an experiment
Constants
This step involves an if and then statement
Hypothesis
Scientists create these to help understand something they cannot observe
Models
The state of matter with the most energy
Gas or plasma
The fomula for density
D= m/v
The varible you change on purpose in each testing group.
Independent variable
The most important thing when creating an experiment
A testable question, one independent variable and many constants
The reason we use models of atoms
Atoms are too tiny to observe
This is added to get a liquid to a gas
Thermal energy (heat)
The density value for water
1 g/cm3
The variable you measure and place on the y-axis.
Dependent variable
When you repeat an expiment this is called
repetition or multiple trials
What did we use in class to model the expanding universe (Big Bang Theory)
Balloons and dots drawn on them
Describe the movement of atoms in a still table
Atoms are always moving and vibrating in solids
If you cut a block in half what happens to the density
It remains the same
The acronym meaning for DRY MIX
Dependent-Responding-Yaxis and Measuring-Independent-Xaxis
When you repeat an experiment from another person this is called
Replication
Draw the model of an oreo cookie for the first quarter phase
The right half is not shaded
State of matter where atoms are closest together
solid
How to find the volume of an irregular object
Water displacement
An aloe plant is placed in three different rooms and observed on growth. The height of the plant is what variable.
Dependent variable
Scientists repeat trials to increase this
Accuracy
Describe the distances between planets in an accurate model
The inner planets are very close and spacing is inconsistent
The process when a solid turns directly into a gas
The unit for density
g/cm3 OR g/ml OR g/L