Experimental Design

What are all the things that are kept the same in an experiment?

• controls

• data

• constants

• independent variables

Tags

NGSS.MS-PS2-2

What is an if....then statement that predicts the outcome of an experiment or how the Independent variable effects the dependent variable?

• Conclusion

• Materials

• Hypothesis

• Problem

Students used various temperatures of water to see which one dissolved candy faster. 
What was the Independent Variable?

• Amount of Candy

• Amount of Water

• Temperature of Water

• Time for Candy to Dissolve

Tags

NGSS.MS-PS1-2

What is the dependent variable for this investigation?

• Type of material (rocks, sand etc)

• Temperature after 10 minutes

• Time under the lamp

• Heat lamp, amount of material

Tags

NGSS.MS-PS3-4

You will want your experiment to have ____ independent variable(s) in it for the experiment to be valid.

• 1

• 2

• 3

• 4

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

• the male alligators

• the incubator

• the gender of the alligator

• the temperature

Tags

NGSS.MS-LS1-5

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

• the size of the baby alligators

• the gender of the baby alligators

• the incubator

• the temperature

Tags

NGSS.MS-LS1-5

To test the effects of roller coaster height on speed, what factors should you keep constant if my only tool is a stopwatch?

• Number of people on it

• Time of day

• Air temperature

• Time on the ride

Tags

NGSS.MS-ETS1-1

Variable your are intentionally changing in an experiment

• dependent variable

• independent variable

• control variable

Tags

NGSS.MS-PS2-2

Factors in an experiment you keep the same

• independent variable

• dependent variable

• control variable

Tags

NGSS.MS-PS2-2