SOL Review Variables

The Independent Variable

• Stays the same

• Is changed on purpose

• Responds to the change

• Is a non-treated group that acts as a comparison

Tags

NGSS.MS-PS2-2

Constants are

• Changed on purpose

• Change in response to a change in the IV

• An untreated group that serves as a comparison

• Things that stay the same

The Dependent Variable

• Changes in response to the IV

• Stays the same

• Is changed on purpose

• Serves as a control group

Tags

NGSS.MS-LS1-5

The Control Group

• Is the same as the IV

• Is an untreated group that serves as a comparison

• Responds to changes in the IV

• Always stays the same

Brodie is testing how different colored light affects plant growth. He gets 3 of the same type of plants. One plant is exposed to red light. Another to blue light. And a third to regular daylight. He uses a ruler to measure the height of the plants every 3 days. What is the IV?

• Same type of plant; ruler; measuring every 3 days

• Colored Light

• Plant Growth

• Plant receiving regular daylight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Brodie is testing how different colored light affects plant growth. He gets 3 of the same type of plants. One plant is exposed to red light. Another to blue light. And a third to regular daylight. He uses a ruler to measure the height of the plants every 3 days. What is the DV?

• The three plants

• The Plant receiving daylight

• Plant Growth

• Colored Light

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Brodie is testing how different colored light affects plant growth. He gets 3 of the same type of plants. One plant is exposed to red light. Another to blue light. And a third to regular daylight. He uses a ruler to measure the height of the plants every 3 days. What is the Control Group?

• The plant that receives daylight

• The plant with red light

• The plant with blue light

• The three plants measured every 3 days

Tags

NGSS.MS-LS2-1

Brodie is testing how different colored light affects plant growth. He gets 3 of the same type of plants. One plant is exposed to red light. Another to blue light. And a third to regular daylight. He uses a ruler to measure the height of the plants every 3 days. What are some constants?

• The red light

• Plant Growth

• The plant that receives regular daylight

• The same type of plant; the same ruler; measuring all 3 plants every 3 days

Tags

NGSS.MS-LS1-5