Soil & Controlled Experiments

In a controlled experiment, researchers tested the effect of soil pH on plant growth by using three soil samples adjusted to acidic (pH 5), neutral (pH 7), and alkaline (pH 9) conditions. Identical plants were grown in each soil type under the same environmental conditions, including light, water, and temperature. Plant growth was measured weekly, focusing on leaf count.

What is the Independent Variable (IV) in this experiment?

• Soil pH

• Plant Growth

• Soil with pH 7

• Temperature

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In a controlled experiment, researchers tested the effect of soil pH on plant growth by using three soil samples adjusted to acidic (pH 5), neutral (pH 7), and alkaline (pH 9) conditions. Identical plants were grown in each soil type under the same environmental conditions, including light, water, and temperature. Plant growth was measured weekly, focusing on leaf count.

What is the Dependent Variable (DV) in this experiment?

• Soil pH

• Plant Growth

• Soil with pH 7

• Temperature

Tags

NGSS.MS-LS1-5

In a controlled experiment, researchers tested the effect of soil pH on plant growth by using three soil samples adjusted to acidic (pH 5), neutral (pH 7), and alkaline (pH 9) conditions. Identical plants were grown in each soil type under the same environmental conditions, including light, water, and temperature. Plant growth was measured weekly, focusing on leaf count.

What is one Controlled Variable (CV) in this experiment?

• Soil pH

• Plant Growth

• Soil with pH 7

• Temperature

In a controlled experiment, researchers tested the effect of soil pH on plant growth by using three soil samples adjusted to acidic (pH 5), neutral (pH 7), and alkaline (pH 9) conditions. Identical plants were grown in each soil type under the same environmental conditions, including light, water, and temperature. Plant growth was measured weekly, focusing on leaf count.

What is the Control Group (CG) in this experiment?

• Soil pH

• Soil with pH 9

• Soil with pH 7

• Temperature

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In a controlled experiment, researchers tested the effect of soil pH on plant growth by using three soil samples adjusted to acidic (pH 5), neutral (pH 7), and alkaline (pH 9) conditions. Identical plants were grown in each soil type under the same environmental conditions, including light, water, and temperature. Plant growth was measured weekly, focusing on leaf count.

What is one Experimental Group (EG) in this experiment?

• Soil pH

• Soil with pH 9

• Soil with pH 7

• Temperature

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which group of percentages accurately reflects a sample of Clay Loam?

• 40% Silt

  30% Clay

  30% Sand

• 10% Silt

  10% Clay

  80% Sand

• 60% Silt

  20% Clay

  20% Sand

• 30% Silt

  50% Clay

  20% Sand

Which group of percentages accurately reflects a sample of Sandy Loam?

• 40% Silt

  30% Clay

  30% Sand

• 10% Silt

  10% Clay

  80% Sand

• 60% Silt

  20% Clay

  20% Sand

• 30% Silt

  50% Clay

  20% Sand

Which group of percentages accurately reflects a sample of Silt Loam?

• 40% Silt

  30% Clay

  30% Sand

• 10% Silt

  10% Clay

  80% Sand

• 60% Silt

  20% Clay

  20% Sand

• 30% Silt

  50% Clay

  20% Sand

Which group of percentages accurately reflects a sample of Clay?

• 40% Silt

  30% Clay

  30% Sand

• 10% Silt

  10% Clay

  80% Sand

• 60% Silt

  20% Clay

  20% Sand

• 30% Silt

  50% Clay

  20% Sand

Which sample below will HOLD ONTO water really well?

• 40% Silt

  30% Clay

  30% Sand

• 10% Silt

  10% Clay

  80% Sand

• 60% Silt

  20% Clay

  20% Sand

• 30% Silt

  50% Clay

  20% Sand