Controls and Variables - Scientific Method

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

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

• dependent variable
• independent variable
• data
• control group

Tags

NGSS.MS-PS2-2

Dependent variable means

• the scientist controls what to test
• educated guess
• ask a question
• what is being measured

Tags

NGSS.MS-PS2-2

If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?

• increase the amount of iron in your blood
• spinach you eat

Which side of a penny will hold more drops of water? Choose the best hypothesis.

• If I use the heads side of a penny, then it will hold more drops of water than tails.
• Heads
• Tails
• Tails will hold more drops of water.

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

• Scientific Method
• Studying
• Independent variable
• Test score

If I listen to Mr. Castro's instructions, then I will have less accidents in the lab. What is the independent variable?

• Yes
• Maybe
• Listening or not listening to instructions
• Likelihood of having an accident in lab 

Which of the following would be considered quantitative data?

• Color
• Smell
• 6.84 cm
• texture

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Explaining the color of a chemical would be what kind of observation?

• Qualitative 
• Quanitative

What is the part of the experiment that is left alone or “natural", and is used to compare back to?

• Independent Variable
• Dependent Variable
• Control Group
• Experimental Group