Scientific Method and Variables

What is a constant/control in an experiment?

• Things that do not change in a 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

If you conduct an experiment where you place 5 of the same red candies in different types of soda, all in the same amount of liquid and same type cups the indipendent variable is what? 

• Kind of soda

• Type of cup

• Amount of soda

• Color of candy

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• Distance traveled by the ball

• Height of the ramp

• Mass of the ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Which of the following is NOT a characteristic of a hypothesis?

• An idea that is given as an “If...then...statement”

• An idea that can be proven or disproven

• An idea that can never be proven

• A testable idea that leads to a scientific investigation

The “Normal” group in an experiment. You can COMPARE your results to this one (nothing happened to it).

Example: If you are testing the effect of the amount of water on plant growth, this group of plants receives the recommended amount of water.

• Constant

• Variable

• Control Group

• Experimental Group

The information you collect while doing your experiment is called

• conclusions

• data

• hypotheses

• procedures

Tags

NGSS.MS-LS1-1

NGSS.MS-PS1-2

Valeria usually walks to school. She wants to see if running to school will help her do better on quizzes in first period. What is her Independent Variable?

• How far she walks

• Running to school

• Walking to school

• How well she does on quizzes

Which variable do you measure?

• Independent

• Dependent

• Constant

• Control

Tags

NGSS.MS-PS3-4

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

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Mr. Smith sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• Distance traveled by the ball

• Height of the ramp

• Mass of the ball

• Shape of the ball

Tags

NGSS.MS-PS3-1