Quiz about 1.10 Energy Flow & 10% Rule

Question 1

Determine how the energy decreases as it flows through ecosystems. Explain using the 10% rule.

Accepted Answer

Energy decreases by 90% at each trophic level.

Answer

Energy decreases by 10% at each trophic level.

Answer

Energy remains constant at each trophic level.

Answer

Energy increases by 10% at each trophic level.

Question 2

Fill in the blank: The loss of energy that occurs when energy moves from lower to higher trophic levels can be explained through the laws of ____.

Accepted Answer

thermodynamics

Answer

gravity

Answer

motion

Answer

electricity

Question 3

What is biomass in an ecosystem measured in terms of?

Accepted Answer

Biomass (dry weight)

Answer

Volume

Answer

Energy

Answer

Temperature

Question 4

Fill in the blank: The amount of biomass present in an ecosystem at a particular time is known as _______.

Accepted Answer

Standing Crop

Answer

Biomass Density

Answer

Ecosystem Mass

Answer

Biological Load

Question 5

What is one source of biomass shown in the diagram?

Accepted Answer

Wood

Answer

Coal

Answer

Natural Gas

Answer

Oil

Question 6

Which of the following is a source of biomass?

Accepted Answer

Sewage

Answer

Plastic

Answer

Metal

Answer

Glass

Question 7

Name a type of residue that contributes to biomass according to the diagram.

Accepted Answer

Agricultural residue

Answer

Industrial residue

Answer

Municipal solid waste

Answer

Forest residue

Question 8

Which of the following is not a source of biomass?

Accepted Answer

Fossil Fuels

Answer

Agricultural Crops & Residues

Answer

Forestry Crops & Residue

Answer

Municipal Solid Waste

Question 9

Identify a source of biomass related to animals from the diagram.

Accepted Answer

Animal waste

Answer

Plant residue

Answer

Fossil fuels

Answer

Solar energy

Question 10

According to the diagram, which of these is a source of biomass?

Accepted Answer

Industrial Residues

Answer

Electronic Waste

Answer

Nuclear Waste

Answer

Chemical Waste

Question 11

What is the title of the diagram that illustrates the process of converting biomass into electricity?

Accepted Answer

Biomass to Electricity Process

Answer

Biomass Conversion Diagram

Answer

Electricity Generation from Biomass

Answer

Diagram of Biomass Energy Conversion

Question 12

Which of the following is a source of biomass as shown in the diagram?

Accepted Answer

Fiber

Answer

Metal

Answer

Plastic

Answer

Glass

Question 13

What process is used to convert biomass into electricity according to the diagram?

Accepted Answer

Combustion

Answer

Gasification

Answer

Fermentation

Answer

Pyrolysis

Question 14

The 2nd Law of Thermodynamics explains how usable energy decreases as you move up the food chain in food webs.

Accepted Answer

Usable energy decreases as you move up the food chain.

Answer

Usable energy increases as you move up the food chain.

Answer

Usable energy remains constant as you move up the food chain.

Answer

Usable energy is not related to the food chain.

Question 15

Ecological Efficiency: The proportion of consumed energy that can be passed from one trophic level to another. How much energy do you notice gets passed from one trophic level to another?

Accepted Answer

10%

Answer

20%

Answer

30%

Answer

40%

Question 16

Explain the role of decomposers in the trophic pyramid.

Accepted Answer

Decomposers break down dead organisms, returning nutrients to the soil.

Answer

Decomposers are primary producers in the ecosystem.

Answer

Decomposers are top predators in the food chain.

Answer

Decomposers convert sunlight into energy.

Question 17

Look at this Pyramid for the Serengeti ecosystem. What is the amount of energy available to the secondary consumers?

Accepted Answer

A) 100 J

Answer

B) 1,000 J

Answer

C) 10,000 J

Question 18

The amount of energy available to the primary consumers is _______.

Accepted Answer

1,000 J

Answer

10,000 J

Answer

100 J

Answer

0 J

Question 19

Look at this Pyramid for the Serengeti ecosystem. What is the assumed ecological efficiency percentage in this pyramid?

Accepted Answer

B) 10%

Answer

A) 5%

Answer

C) 20%

Question 20

What is the energy available at the Tertiary Consumers level?

Accepted Answer

95.00 J

Answer

950.00 J

Answer

9,500.00 J

Answer

95,000.00 J

Question 21

Fill in the blank: The energy available at the Secondary Consumers level is ______ J.

Accepted Answer

950.00 J

Answer

850.00 J

Answer

1050.00 J

Answer

750.00 J

Question 22

Fill in the blank: To calculate biomass or energy available at the next level up, move the decimal place one spot to the left (or divide by ______).

Accepted Answer

10

Answer

5

Answer

100

Answer

2

Question 23

What is the biomass of the tertiary consumers in the ecological pyramid?

Accepted Answer

8 kg

Answer

80 kg

Answer

800 kg

Answer

8,000 kg

Question 24

Fill in the blank: The biomass of the primary consumers is ______ kg.

Accepted Answer

800 kg.

Answer

600 kg.

Answer

1000 kg.

Answer

1200 kg.

Question 25

What is the biomass of the producers in the ecological pyramid?

Accepted Answer

D) 8,000 kg

Answer

A) 8 kg

Answer

B) 80 kg

Answer

C) 800 kg

1.10 Energy Flow & 10% Rule

29 questions