Which of the following statements best describes the purpose of forming a hypothesis in the scientific method?
*
1 point
To prove a theory correct
To make predictions about the outcome of an experiment
To collect data and analyze results
To communicate findings with others
To make predictions about the outcome of an experiment.
Which of the following is an accurate definition for a scientific theory?
1 point
An educated guess about a phenomenon.
A well-tested explanation that explains why a scientific phenomenon occurs/occured.
A description of something that has happened.
An uneducated guess about a phenomenon.
A well-tested explanation that explains why a scientific phenomenon occurs/occurred.
Which statement best describes the difference between a theory and a law?
1 point
Scientific theories explain WHY a phenomenon occurs, and a scientific law explains WHAT occurs.
Scientific theories explain WHAT occurs, and a scientific law explains WHY a phenomenon occurs.
They both explain why something happens
They both tell us what happens
Scientific theories explain WHY a phenomenon occurs, and a scientific law explains WHAT occurs.
Which statement correctly describes the relationship between thermal energy and particle movement?
1 point
As thermal energy increases, there is less particle movement.
As thermal energy increases, particle movement does not change.
As thermal energy increases, it is not possible to predict particle movement.
As thermal energy increases, there is more particle movement.
As thermal energy increases, there is more particle movement.
What happens to the density of a material if you have a larger piece of it?
1 point
The density will be smaller because the mass remains the same as the volume increases.
The density will remain the same because mass and volume will remain the same.
The density will remain the same because mass and volume will both increase in the same way.
The density will be greater because the mass increases but the volume remains the same.
The density will remain the same because mass and volume will both increase in the same way.
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?
1 point
The model should show 27 protons and 32 neutrons.
The model should show 59 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 32 protons and 59 neutrons.