Experimental Design and Variables

Front

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?

Back

Time they are running

Front

Which variable is changed on purpose by the experimenter?

Back

Independent Variable

Front

What is the dependent variable in a test where a scientist turns a light on and off to observe moth behavior?

Back

moth behavior/their reaction

Front

How many variables should you change in an experiment?

Back

one only

Front

Which factor in an experiment stays the same or is kept constant?

Back

controlled variable

Front

What is a factor that is measured for change in an experiment? Options: control, constant, independent variable, dependent variable

Back

dependent variable

Front

What is the part of the experiment that contains the independent variable? Options: control group, experimental group, hypothesis, dependent variable

Back

experimental group

Front

What are the number of times each level of the independent variable is tested?

Back

repeated trials

Front

An organized procedure to study something under controlled conditions is a(n)_____. Options: observation, field study, model, experiment

Back

experiment

Front

A numbered step by step description that begins with a verb and tells exactly how the experiment is to be done.

Back

Procedures