Characteristics of Life and Scientific Method

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on colored buns.  He usually averages 25 customers per day.  On Tuesdays he now averages 27 customers. 
What was the independent variable?

• The customers 
• The crabby patty
• The colored buns
• The number of customers

Mr. Krabbs is trying a new money making scheme.  On Tuesdays he is selling his crabby patties on colored buns.  He usually averages 25 customers per day.  On Tuesdays he now averages 27 customers. 
What was the dependent variable?

• The customers 
• The crabby patty
• The colored buns
• The number of customers

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

How many variables can be tested in a controlled experiment?

• one
• two
• three
• as many as possible

Tags

NGSS.MS-PS2-2

A testable prediction about a scientific investigation

• Question
• Observation
• Hypothesis
• Experiment

Why do scientist use the scientific method?

• To make sure they get credit for their discoveries.
• To make sure their results are valid and can be performed by other scientists.
• So that other scientist don't get mad at them

Tags

NGSS.MS-PS1-2

This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 

• experimental group
• control group
• data
• variables

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Research Question: Does the type of gasoline put in a car effect how fast the car can drive? What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Tags

NGSS.MS-PS3-1

A worm turns away from light is an example of a worm

• reproducing
• doing cellular respiration
• having cells
• responding to its environment