Variables and experimental methods

Is an experiment conducted under highly controlled conditions

• natural

• Lab

• field

There are 3 types of experiments :

• Lab , Natural and Field

• Sun , Moon , Natural

• Exploring , Lab and Field

Which type of experiment can not be done outdoors ?

• field

• lab

• natural

The one variable in an experiment that is purposely changed by the scientist is the________________.

• dependent variable

• independent variable

• data

• control group

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

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

Research Question: Does the type of gasoline put in a car affect how fast the car can drive. I try regular, plus, and premium to see which one makes my car faster.

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

Walker is testing which fertilizer will grow the tallest grass.  The height of the grown grass is the __ variable.

• constant (same)
• independent (changes)
• dependent (measured)

Does changing the scent of my dog's food affect how much the dog eats?

I try original, chicken, beef, and shrimp to see which the dog eats more of.

Which variable is the part in red?

• independent

• dependent

Does the flavor of ice cream affect how fast the ice cream melts?

I scoop equal amounts of vanilla, chocolate, and Macinac Island Fudge flavors into three separate bowls.

Which variable is the part in red?

• independent

• dependent

If I study for my scientific method quiz, then I will have a better test score. What is the dependent variable?

• Scientific Method
• Studying
• Independent variable
• Test score