PBS 1.1.2: Reliable Witnesses?

What is an independent variable?

• What is measure in an experiment
• What you change in an experiment 
• A prediction about an experiment
• What stays the same in an experiment

What is a hypothesis?

• An observation
• Something that you know
• An educated prediction
• What you keep the same in an experiment

The control used in a polygraph test to determine if an individual is lying is called ___________

What physiological responses does a lie detector test measure? Check all that apply.

• Heart rate

• Eye movement

• Respiration rate

• Temperature

Tags

NGSS.HS-LS1-3

How many breaths you take in one minute is called

• Heart rate

• Conductivity

• inhalation rate

• Respiration rate

What will increase your heart rate and therefore, respiration rate? Check all that apply

• Running

• Sleeping

• meditating

• Swimming

Tags

NGSS.HS-LS1-3

Which of the following is an example of a vital sign?

• Pulse rate

• temperature

• blood pressure

• All of these options are examples

Tags

NGSS.HS-LS1-3

What is the control group of an experiment used for?

• Gives us a means to compare the experimental group with

• Has the independent variable applied

• Has the dependent variable applied

• Show a response to the independent variable

Which of the following might represent someone lying during a polygraph test?

• Respiration rate remains similar to baseline

• Decreased respiration rate from their baseline

• Similar heart rate as baseline

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Compound