Components of Experimental Design and Data

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

What is the independent variable in this experiment?

• Height of plants

• Amount of water given each day

• Type of soil

• Number of plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

What is the dependent variable in this experiment?

• Type of soil

• Height of plants after 2 weeks

• Amount of water given each day

• Amount of sunlight

Tags

NGSS.MS-LS1-5

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

Which of the following are constants in this experiment?

• A. Type of soil, location on windowsill, sunlight

• B. Amount of water, height of plants

• C. Growth of plants, number of days

• D. Plant A as the control

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

What is the control in this experiment?

• Plant B (50 mL)

• Plant C (100 mL)

• Plant D (150 mL)

• Plant A (0 mL)

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

Which of the following best represents the data set?

• The different types of soil used

• The daily watering amounts (0, 50, 100, 150 mL) and plant heights (3, 12, 20, 18 cm)

• The number of plants used (4 total)

• The sunlight from the windowsill

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

Which plant grew the tallest, and how much water did it receive?

• Plant A – 0 mL

• Plant B – 50 mL

• Plant C – 100 mL

• Plant D – 150 mL

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

Between which two plants is the biggest difference in growth?

• A and B

• B and C

• C and D

• A and D

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

Based on the data, what is the best amount of water for plant growth?

• 0 mL

• 50 mL

• 100 mL

• 150 mL

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

What pattern do you notice about the relationship between water and plant growth?

• More water always means more growth

• Some water helps plants grow best, but too much slows growth

• Plants grow the same no matter how much water

• Plants only grow with no water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to find out how the amount of water affects the growth of bean plants. Four plants are placed on the same windowsill with equal sunlight and the same type of soil.

• Plant A gets 0 mL of water each day.

• Plant B gets 50 mL of water each day.

• Plant C gets 100 mL of water each day.

• Plant D gets 150 mL of water each day.

After 2 weeks, the height of each plant is measured, as shown on the table.

If the experiment continued for 4 weeks, what would you expect might happen to Plant A (0 mL)?

• It would stay at 3 cm

• It would continue to grow taller without water

• It would likely stop growing and may die

• It would grow as tall as Plant C

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1