Checkup - Controlled Experiments

Adam is conducting a science experiment on the effect of different environments on plant growth.  He put one plant in a closet and the other plant in a window at his house.  He measured the growth of each plant weekly for six weeks.  He then created a graph after he reviewed his data.  What is the dependent variable in Adam's experiment?

• Total Growth of Plant.
• Plant Environment
• The Effect of Different Environments
• Measurement Over Six Weeks

Tags

MO.SCI.6-8.LS1.B.2

MO.SCI.6-8.LS1.B.3

What is the factor that an experimenter changes on purpose?

• Dependent Variable
• Independent Variable
• Constant
• Control

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true. CHANGES AS A RESULT OF THE EXPERIMENTAL CONDITIONS.

• Independent

• Dependent

• Control

Tags

NGSS.MS-PS1-2

The parts (variables) in the experiment that must be kept the from changing at all times for all of your testing

• Constants (controlled variables)

• independent
• Dependent

If I water the plant more often, then it will grow taller. Which of these is NOT kept constant?

• The amount of soil.

• The pot size.

• The type of plant.

• The amount of water.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. Which 2 of these are controlled variables/constants?

• The ball used

• The height the ball bounces

• Height of the ball being dropped

• The surface the ball is bouncing on

Tags

NGSS.MS-ETS1-1

Controlled variables are the same thing as

• the control group

• constants (constant conditions)

• independent variable

• dependent variable

A control in an experiment

• is used to compare the experimental group to and is not given any experimental changes

• is given extra treatment

If we wanted to test how consuming sugar affected the heart rate of 12 year old boys, what would we use as our control group.

• 11 year old boys who eat sugar

• 12 year old girls who eat more sugar than boys

• 12 year old boys who have not eaten sugar yet

Tags

NGSS.MS-ETS1-1

A scientist collected the following data on algae (seaweed) growth during an experiment:

Which of the following is the dependent variable

• time for population growth

• water temperature

• celsius

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1