8th Grade 2nd Semester Test

Which of the following is an example of a biotic factor in an ecosystem?

• Sunlight

• Grass

• Water

• Soil

What is Newton's First Law of Motion also known as?

• Law of Acceleration

• Law of Inertia

• Law of Action-Reaction

• Law of Conservation

What is the basic unit of heredity?

• Cell

• Chromosome

• Gene

• Nucleus

Which of the following best describes Newton's Third Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object at rest stays at rest.

• Force equals mass times acceleration.

• Energy cannot be created or destroyed.

Tags

NGSS.MS-PS2-1

Which process describes the movement of energy from the Sun to plants?

• Respiration

• Photosynthesis

• Decomposition

• Transpiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

• 0%

• 25%

• 50%

• 75%

Which of the following is an abiotic factor that can affect a freshwater ecosystem?

• Fish

• Algae

• Temperature

• Insects

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which law states that energy cannot be created or destroyed, only transformed?

• Law of Conservation of Mass

• Law of Conservation of Energy

• Newton's First Law

• Law of Gravity

Tags

NGSS.MS-PS3-5

Which of the following best describes a dominant allele?

• An allele that is always masked

• An allele that is only expressed when two are present

• An allele that is always expressed when present

• An allele found only in plants

A ball is rolling on a flat surface and eventually stops. Which force is primarily responsible for stopping the ball?

• Gravity

• Friction

• Magnetism

• Air resistance

Tags

NGSS.MS-PS3-5