ES - Experimental Design

The type of variable that responds to the experiment and is what you measure or count to determine if your hypothesis is true.

• Independent
• Dependent
• Control

Tags

NGSS.MS-PS2-2

Dory set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• distance traveled by the ball
• height of the ramp
• mass of the ball
• ball type

Tags

NGSS.MS-PS2-2

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed a tomato plant in 6 identical 10 inch pots with the same amount and type potting soil. She watered them ¼ cup each day. 3 plants were placed under a cardboard box and 3 plants were placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the dependent variable?

• Using the same type of plant

• Each plant was placed in a 10 inch pot

• The growth of the plant

• 3 plants in the sunlight and 3 plants under a box

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is the factor that an experimenter changes on purpose?

• Dependent Variable
• Independent Variable
• Constant
• Control

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

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

NGSS.MS-LS2-1

A scientist hypothesizes that 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

In this graph, what is the independent variable? 

• Population
• Day
• Species 5

Tags

NGSS.MS-LS2-1

In this graph, what is the dependent variable? 

• Walla Walla Island
• Time
• Number of Deer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed a tomato plant in 6 identical 10 inch pots with the same amount and type potting soil. She watered them ¼ cup each day. 3 plants were placed under a cardboard box and 3 plants were placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the independent variable?

• Using the same type of plant

• Each plant was placed in a 10 inch pot

• The growth of the plant

• 3 plants in the sunlight and 3 plants under a box

Tags

NGSS.MS-LS1-5

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedure or test

• conclusion