Select all of the biotic factors of an ecosystem.

• Rivers

• Deer

• Grass

• Rocks

• Mushrooms

Answer explanation

Biotic factors are all the living organisms of an ecosystem.

Select all of the abiotic factors of an ecosystem.

• Glacier

• Sand

• Salmon

• Bear

• Leaf on a tree

Answer explanation

Abiotic factors are all of the non-living factors of an ecosystem.

Which of the following is an example of potential energy?

• 
• 
• 
• 

Answer explanation

Potential energy is stored energy. Kinetic energy is of motion.

Tags

NGSS.MS-PS3-2

Which of the following is an example of kinetic energy?

• 
• 
• 
• 

Answer explanation

Kinetic energy is the energy of motion.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

If a person walks from point A, to point B, and then to point C, what is there distance?

• 15

• 11m SE

• 15m

• 15m SE

Answer explanation

Distance is the total length of the path a person traveled.

What is the distance travelled if someone walks all the way around the perimeter of the rectangle twice?

• 30m

• 0m

• 60

• 60m

• 30

Answer explanation

Distance is the total length of a path someone traveled.

What is the displacement of someone who walks all the way around the perimeter of the rectangle twice?

• 30m

• 30

• 60m

• 60

• 0m

Answer explanation

Displacement is the distance and direction someone is from their starting point using a straight line. If you end where you started then your displacement is 0.

If a person walks from point A to point B, what is their distance?

• 10m

• 10m East

• 10

• 0m

Answer explanation

Distance is the total length of the path travelled.

If a person walks from point A to point B, what is their displacement?

• 10m

• 10

• 0m

• 10m East

From 0 to 4 seconds the object is _________________.

• motionless

• moving back toward it starting position.

• moving away from its starting position.

• moving at various speeds.

Tags

NGSS.MS-PS3-1