Experimental Variables

Multiple Choice

The variable that is being measured

• independent variable

• dependent variable

• controlled variable (constants)

Multiple Choice

the variable that is kept the same to make sure results are caused by the thing being tested

• independent variable

• dependent variable

• controlled variable (constants)

Multiple Choice

What is the independent variable?

• what we are changing or testing
• what we are observing or measuring
• what we keep the same to make the experiment fair

Multiple Choice

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the dependent variable?

• The height that the ball bounces

• Height from which the ball is dropped

Multiple Choice

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the control variable?

• The ball used

• The height the ball bounces

• Height of the ball being dropped

Multiple Choice

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the independent variable?

• Distance traveled by the ball

• Mass of the ball

Multiple Choice

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the controlled variable?

• Distance traveled by the ball

• Height of the ramp

• Mass of the ball

Multiple Choice

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• Distance traveled by the ball

• Height of the ramp

• Mass of the ball

Multiple Choice

Students used various temperatures of water to see which one dissolved candy faster. 
What was the Independent Variable?

• Amount of Candy
• Amount of Water
• Temperature of Water
• Time for Candy to Dissolve

Multiple Choice

Does the size of deer effect the size of its heart? What is the independent variable?

• Size of Deer
• Gender of Deer
• Size of its heart
• Age of deer, gender, and height

Multiple Choice

You will want your experiment to have ____ independent variable(s) in it for the experiment to be valid.

• 1
• 2
• 3
• 4

Multiple Choice

In this graph, what is the independent variable? 

• Population
• Day
• Species 5

Multiple Choice

In this graph, what is the dependent variable? 

• Walla Walla Island
• Time
• Number of Deer

Multiple Choice

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the

• type of soda given to each group
• amount of soda given to each group
•  pulse rate of each group
• age of participants in each group

Multiple Choice

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

Multiple Choice

Qualitative or Quantitative:
The cat has orange fur on his ears. 

• Qualitative
• Quantitative

Multiple Choice

You decide to clean your bedroom. You notice that your floor is covered with clothes. You decide to try to get rid of the clothes by throwing the clothes into the air. You throw clothes from a 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. The last 1/3 of the room you leave the clothes on the floor. After 30 minutes of "cleaning", the floor of the room is now visible. WHAT IS THE INDEPENDENT VARIABLE?

• The bedroom

• How clean the bedroom is

• The amount of clothes

• Throwing the clothes

Multiple Choice

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the independent variable?

• type of plant

• plant growth

• type of liquid

• amount of sunlight