8th Grade Mock SSA

In a scientific investigation, the variable that is being changed by the scientist is the:

• Independent Variable

• Dependent Variable

• Constant

• Control Group

Ms. Mynatt completes several trials of the same experiment to ensure that her data is accurate. This is an example of:

• Repetition

• Replication

• Independent Variable

• Constant

Ms. Mynatt completes several trials of the same experiment to ensure that her data is accurate. She then gives her materials and procedure to Ms. Hyde and Ms. Hyde completes the same experiment.  This is an example of:

• Repetition

• Replication

• Independent Variable

• Dependent Variable

Rocks formed through heat and pressure

• Igneous

• Metamorphic

• Sedimentary

A new brand of headache medication wants to test if their medication is effective. They find 20 people with headaches. They give their medication to Group A and they give flavored water to Group B. Which is the control group?

• Group A

• Group B

The _________ group is the group not receiving any treatment.

• Control

• Experimental

Variables that must be the same across all groups in an experiment are

• Constants

• Independent

• Dependent

Why does scientific knowledge change over time?

• Scientists like to make things complicated

• Scientists like to change their minds

• New evidence and discoveries lead to revisions in their understanding

• Scientific knowledge does not change

Tags

NGSS.HS-ESS3-1

NGSS.HS-ETS1-3

NGSS.HS-PS1-2

Which of the following best describes empirical evidence in science?

• Evidence based on personal feelings

• Evidence that a scientist obtained by talking to another scientist

• Evidence gathered through experiments and observations

• Evidence obtained through textbooks

Tags

NGSS.MS-PS1-2

What is the main difference between scientific theories and scientific laws?

• Theories are ideas and laws are proven

• Theories explain why something happens, while laws describe what happens

• Theories are always correct, while laws can be incorrect

• Theories describe what happens, while laws explain why something happens