- Science
- Grade 7
- Organisms and environments
A student expectation is directly related to the knowledge and skills statement, is more specific about how students demonstrate their learning, and always begins with a verb. Student expectations are further broken down into their component parts, often referred to as “breakouts.”
Vertical alignment shows student expectations in the same subject area at different grade levels that are related to or build upon one another.
identify and illustrate how living organisms depend on each other through food chains.
create and describe food chains identifying producers and consumers to demonstrate how animals depend on other living things; and
identify and describe the flow of energy in a food chain and predict how changes in a food chain such as removal of frogs from a pond or bees from a field affect the ecosystem;
describe the cycling of matter and flow of energy through food webs, including the roles of the Sun, producers, consumers, and decomposers; and
Patterns are regular sequences that can be found throughout nature.
On average, 90% of the energy in a given trophic level is expended by the organism or transferred out of the system as heat and 10% of the energy is transferred to the next trophic level. This pattern, known as the 10% rule, allows predictions to be made regarding the amount of energy that will transfer from one trophic level to the next.
Cause-and-effect relationships are relationships between two or more variables or phenomena whereby one variable or event leads to a predictable response. Events have causes—sometimes simple, sometimes multi-faceted.
An organism's metabolic processes require 90% of the energy consumed by the organism (cause), leaving so 10% of the energy is transferred to the next trophic level (effect).
A system is a whole made of parts that work together. It has components and boundaries. It can interact with or be part of other systems.
The organisms in an ecosystem depend on one another in producer/consumer and predator/prey relationships and can be described by trophic levels.
Matter and energy are conserved, changing forms but maintaining quantities. Energy flows within a system or between systems through transfers and transformations. Matter is cycled within systems through physical and chemical processes.
As energy flows through an ecosystem, 90% of that energy is expended by the organism or transferred out of the system as heat and 10% of the energy is transferred to the next trophic level.
Math.7.4.D solve problems involving ratios, rates, and percents, including multi-step problems involving percent increase and percent decrease, and financial literacy problems
Math.7.12.A compare two groups of numeric data using comparative dot plots or box plots by comparing their shapes, centers, and spreads
Math.7.13.E calculate and compare simple interest and compound interest earnings
TA.7.1.B analyze the patterns and sequences found in flowcharts