Reviewing 2.3 Flows of Energy

What is food chain?

• it is the process during which producers use chemical energy in matter rather than light energy and make food.

• it is a model that shows how energy flows in an ecosystem through feeding relationships.

• it is a model of energy transfer that shows how food chains in a community are interconnected.

• it is an energy model that shows the amount of energy available in each step of a food chain.

What is food web?

• it is the process during which producers use chemical energy in matter rather than light energy and make food.

• it is a model that shows how energy flows in an ecosystem through feeding relationships.

• it is a model of energy transfer that shows how food chains in a community are interconnected.

• it is an energy model that shows the amount of energy available in each step of a food chain.

According to the 2nd law of thermodynamics, as energy is transferred or transformed, it becomes more and more ____________.

• hot
• dissipated
• disordered
• intense

Tags

NGSS.HS-PS3-4

In the first law of thermodynamics, energy can neither be ___________nor ______________.

• measured, assessed
• created, destroyed
• homogeneous, heterogeneous
  
• biotic, abiotic

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The rate at which photosynthetic primary producers incorporate energy from the sun is called

• Gross Primary Production
• Photosynthetic Primary Production
• Net Primary Production
• Primary Production

Tags

NGSS.MS-LS1-6

How to calculate Net Primary Production:

• (GPP)(respiration)=NPP
• GPP/respiration=NPP
• GPP+respiration=NPP
• GPP-respiration=NPP

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-5

If the Senagal Gum Acacia contains 3,000 kilocalories, how many of those calories will the lion get?

• 1
• 300
• 3,000
• 30

Tags

NGSS.MS-LS2-3

Which of the following is the correct formula for respiration?

• R=NPP + GPP

• R=NPP-GPP

• R=GPP-NPP

• R=GPP/NPP

Tags

NGSS.HS-LS2-4

If gross primary productivity is 5 gC/m²yr, and the producers need 1.5 gC/m²yr for their own respiration, what is the net primary productivity?

• 3.5 gC/m²yr

• 6.5 gC/m²yr

• -3.5 gC/m²yr

• 7.5 gC/m²yr

Tags

NGSS.HS-LS2-4

The GPP of a certain producer is 5,000 gC/m²yr and the NPP is 4,000 gC/m²yr. What is the repsiratory energy needed by the autotrophs?

• cannot be determined from the information given

• 1,000 gC/m²yr

• 9,000 gC/m²yr

• -1,000 gC/m²yr

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-5