Grade 07 Science - EC: S7.C.2.1.3
Grade 07 Science - EC: S7.C.2.1.3
Continuum of Activities
The list below represents a continuum of activities: resources categorized by Standard/Eligible Content that teachers may use to move students toward proficiency. Using LEA curriculum and available materials and resources, teachers can customize the activity statements/questions for classroom use.
This continuum of activities offers:
- Instructional activities designed to be integrated into planned lessons
- Questions/activities that grow in complexity
- Opportunities for differentiation for each student’s level of performance
Grade Levels
7th Grade
Course, Subject
Science
Related Academic Standards / Eligible Content
Activities
- What is an energy pyramid?
- How is an energy pyramid similar to a food web? How is it different?
- Your friend ate an apple at lunchtime. Explain three ways the chemical energy in the apple transformed. Explain what type of energy the chemical energy transformed into and what how this new energy may have been used.
- Below is a diagram of an energy pyramid. Based on the model, what can you conclude about the population of bears in this ecosystem compared to the population of primary producers (grass, trees, shrubs, etc.)? Use facts to explain your reasoning.
Answer Key/Rubric
- An energy pyramid is a model showing the flow of energy through an ecosystem.
- Acceptable responses may include, but are not limited to:
- Both show trophic levels.
- Both show predators and prey.
- Both illustrate food chains.
- Food web shows specific food sources that animals will consume.
- Energy pyramid shows how much energy is transferred between trophic levels when food is consumed.
- Acceptable responses may include, but are not limited to:
- Sound energy – allowed friend to speak
- Kinetic energy – allowed friend to move
- Heat energy – some energy is always lost as heat energy during an energy transformation
- Acceptable responses may include, but are not limited to:
- The population of bears is much less than the population of primary producers.
- Bears get much less energy from the square meter than the primary producers.
- Population of primary consumers feeds a smaller population of consumers.
- Populations decrease as trophic levels get higher.
- Higher trophic levels need to consume more food in order to obtain the energy they need to survive.
