Scientific Method

If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect 

• independent variable
• dependent variable
• control variable

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. What variables should be kept constant/controlled? 

• type of plant, flower pot,  soil, and amount of sunlight
• water, apple juice, milk
• only the amount of sunlight
• type of plant only

Why do we want to test one variable at a time?

• Because it is hard to setup a data table with more
• To know what is causing the changes. This helps us understand cause and effect.
• It is what has always been done

What is a constant/control in an experiment?

• Things that do not change inana experiment.  It's the variable that stays the same.  You can have many variables stay the same.
• It's the variables that the scientist changes in the experiment
• It's the variables that are being measured in an experiment

What is the independent variable in this experiment?

• ramp height

• the speed that the ball rolls

• type of ball

What is the dependent variable of this experiment?

• ramp height

• the speed that the ball rolls

• type of ball

What is being kept constant?

• ramp height
• speed of the ball rolling
• type of ball

What is the independent variable in this experiment?

• temperature of the stove

• how fast the water boils

• amount of water

What is the dependent variable of this experiment?

• how fast the water boils

• amount of water

• temperature of stove