Topic 4.2 Energy Flow Understandings Knowledge Preview -POST

Rate your knowledge or skill level for each of these assessment statements or sub-topics for Topic 5.2. A 5 indicates mastery of the topic with respect to IB level questioning.
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  1. Most ecosystems rely on a supply of energy from sunlight.
    1 2 3 4 5


  1. Light energy is converted to chemical energy in carbon compounds by photosynthesis.
    1 2 3 4 5


  1. Chemical energy in carbon compounds flows through food chains by means of feeding.
    1 2 3 4 5


  1. Energy released from carbon compounds by respiration is used in living organisms and converted to heat.
    1 2 3 4 5


  1. Living organisms cannot convert heat to other forms of energy.
    1 2 3 4 5


  1. Heat is lost from ecosystems.
    1 2 3 4 5


  1. Energy losses between trophic levels restrict the length of food chains and the biomass of higher trophic levels.
    1 2 3 4 5


  1. Quantitative representations of energy flow using pyramids of energy.
    1 2 3 4 5





Linda Kilch