WorksheetsExperimental Design and Variables
Total questions: 20
Worksheet time: 20mins
I am doing a test to see if there is a connection between how long you run and how fast your heart beats. I will be performing an experiment where a person will run for a 1 minute and I will check their heartbeat. Then they will run for 2 minutes and I will check their heart rate. I will do this up to 6 minutes and see if there is a connection. WHAT IS THE INDEPENDENT VARIABLE?
Heart rate
6 minute time limit
Time they are running
The person
Soccer season is here and I think I need to make sure I am healthy and I want to lose some weight. I keep seeing these commercials for Special K cereal and if you eat it for 2 weeks, you will lose 10 pounds. I want to test this idea and see if it actually works. I plan on eating whatever I want for the next two weeks and am going to track my weight every morning. Then I will eat nothing but Special K cereal, milk and water for two weeks and track my weight in the morning. WHAT IS THE DEPENDENT VARIABLE?
My weight
The cereal
10 lbs
Eating whatever I want
Which of the following variables is changed on purpose by the experimenter?
A scientist is testing the impact of light and dark on the moth behavior by turning a light on and off. The DEPENDENT variable is...
amount of light
moth behavior/their reaction
number of moths
turning on and off
one only
Which of the following factors in an experiment that stays the same or kept constant?
fair test
controlled variable
dependent variable
independent variable
An organized procedure to study something under controlled conditions is a(n)_____.
A numbered step by step description that begins with a verb and tells exactly how the experiment is to be done.
Results
Problem
Materials
Procedures
What was the Independent Variable?
Students wanted to see if the type of material affected the temperature after being placed under a heat lamp for 10 minutes.
What is the dependent variable for this investigation?
Type of material (rocks, sand etc)
Temperature after 10 minutes
Time under the lamp
Heat lamp, amount of material
If plants receive more water, the number of leaves will increase. This is an example of _____.
The two groups in a controlled experiment are -
Control Group
Experimental Group (Test)
Independent Variable
Dependent Variable
A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the control group?
type of cleaner
tap water
dirty tables
the amount of dirt
Steve wanted to see if different types of fertilizer influence sunflower growth. What is the experimental group?
sunflower grown with fertilizer
sunflower grown without fertilizer
the size of pots
the sunflower plant
What is the group in an experiment that receives treatment with the independent variable?
control group
experimental group
independent group
dependent variable
