experimental design

Experiment: Does the flavor of ice cream effect how fast the ice cream melts?

The flavor of ice cream is the ___________ variable.

• independent

• dependent

Experiment: Does changing the wing shape to make it smaller impact the distance a paper airplane will fly?

The wing shape is the ___________ variable.

• independent

• dependent

Experiment: How does watching YouTube while studying impact a student’s test grades?

The student's grades are the ___________ variable.

• independent

• dependent

Experiment: Butter bean seeds were placed in dishes lined with moist paper towel for 5 days at different temperatures & percent germination was measured.

Which of the following is the independent variable?

• Number of seeds

• Time

• Temperature

• Type of seed

• Percent germination

Experiment: Does the temperature of water affect the time it takes a sugar cube to dissolve?

What are the IV and DV for this experiment?

• IV: type of water

  DV: dissolving rate

• IV: temperature of water

  DV: type of sugar cube

• IV: temperature of Water

  DV: dissolving Rate

• IV: time

  DV: number of sugar cube

The dependent variable is the variable

• the experimenter measures

• the experimenter changes

The independent variable is the variable the

• experimenter measures

• experimenter changes

A controlled experiment is one where

• the experimenter changes only one variable

• the experimenter changes many variables

Experiment: 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. Each plant has the same amount of soil, sunlight, and listens to the same music.

In this investigation, the independent variable is ...

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

Tags

NGSS.MS-LS1-5

Experiment: 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. Each plant has the same amount of soil, sunlight, and listens to the same music.

In this investigation, what are the controlled variables?

• Type of plant, amount of music, and sunlight

• Water, apple juice, milk

• Plant growth