Independent-Dependent Variables

What is the DEPENDENT variable (effect) is this experiment?
"Does eating breakfast improve test score?" 

• eating breakfast or not
• the grade you got on the test
• what time you get up in the morning
• how tasty the breakfast is

What is the INDEPENDENT variable (cause) is this experiment?

"Which type of planting material/medium is best for plant growth?"

• height of plant (cm)

• type of medium (soil vs. sand)

• amount of medium

• types of plant

Tags

NGSS.MS-LS1-5

What is the DEPENDENT variable (effect) in this experiment?
"Do tall people jump further than short people?"

• height of the person
• weight of the person
• how fast the person runs
• how far the person jumps

What is a hypothesis?

• A hypothesis is the right answer to an experiment.

• A hypothesis is the wrong answer to an experiment.

• A hypothesis is an educated guess.

• Research from other scientists

How does watching TV during studying affect a student’s test grades? What part is the red?

• independent
• dependent

You use the scientific method all the time to solve everyday problems.

• True
• False

Tags

NGSS.MS-LS1-5

Molly investigated if the age of students caused them to be better drivers. What is the independent variable?

• Type of car

• Skill of driving

• Age of student

• Speed of driving

Molly investigated if the age of students caused them to be better drivers. What is the dependent variable?

• Type of car

• Skill of driving

• Age of student

• Speed of driving

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different brands of fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

• Compound

Tags

NGSS.MS-LS2-1