Variables and Experiments

In an experiment to find out how the temperature affects the bounce height of a ball, the dependent variable is ...

• temperature
• bounce height
• the thermometer
• the ruler

Should experiments be repeated over and over to see if the results are the same each time?

• yes
• no

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

• dependent variable

• independent variable

• data

• control group

Research Question: Does the type of gasoline put in a car affect 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.HS-PS2-1

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

What is the independent variable?

• cost of mowing
• Moe's Mowing Service
• $18
• Mowing Time

Tags

NGSS.MS-PS3-1

In a line graph you will find the independent variable on .... axis and the dependent variable on .... axis

• x , y

• y, x

• they can be switched

A testable prediction about a scientific investigation is a(n)

• Question
• Observation
• Hypothesis
• Experiment

Tags

NGSS.MS-PS2-2

How many independent variables should you have in an experiment?

• two

• as many as possible

• four

• one

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

This part of the experiment serves as a basis of comparison; the group that does not receive the independent variable.

• constant

• control group

• experimental group

• hypothesis