7th Grade Science Standards

Nebraska Science Standards – PDF

7TH GRADE

The seventh grade standards and indicators help students gather, analyze, and communicate evidence as they formulate answers to questions tailored to student interest and current topics that may include but are not limited to:

How does thermal energy affect particles? Students will be able to provide molecular level descriptions that explain states of matter and changes between states.

Why do different pure substances have different physical and chemical properties and how do those properties determine how substances are used?
Students are expected to understand what occurs at the atomic molecular scales.

What happens when new materials are formed?
Students are expected to provide molecular level descriptions to explain that chemical reactions involve regrouping of atoms to form new substances and that atoms rearrange during chemical reactions.

How do organisms obtain and use energy? Students are expected to use conceptual and physical models to explain the transfer of energy and cycling of matter as they construct explanations for the role of photosynthesis in cycling matter in ecosystems.

How does matter and energy move through an ecosystem?
Students are expected to construct explanations for the cycling of matter in organisms and the interaction of organisms to obtain matter and energy from an ecosystem to survive and grow.

How do organisms interact with other organisms in the physical environment to obtain matter and energy?
Students are expected to understand that organisms and populations of organisms are dependent on their environmental interactions both with other organisms and with non-living factors.

How do people figure out that Earth and life on Earth have changed over time?
Students are expected to examine geoscience data in order to understand the processes and events in Earth’s history.

How do the materials in and on Earth’s crust change over time?
Students are expected to understand how Earth’s geosystems operate by modeling the flow of energy and the cycling of matter within and among different systems.

How do human activities affect Earth’s systems?
Students are expected to understand the ways that human activities impact Earth’s other systems.


SC.7.3 Structure and Properties of Matter

SC.7.3.1 Gather, analyze, and communicate evidence of the structure, properties, and interactions of matter.

SC.7.3.1.A Develop models to describe the atomic composition of simple molecules. Assessment does not include valence electrons and bonding energy, discussing the ionic nature of subunits of complex structures, or a complete description of all individual atoms in a complex molecule or extended structure is not required.

SC.7.3.1.B Gather and make sense of information to describe that synthetic materials come from natural resources and impact society. Assessment is limited to qualitative information.

SC.7.3.1.C Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.


SC.7.5 Chemical Reactions

SC.7.5.2 Gather, analyze, and communicate evidence of chemical reactions.

SC.7.5.2.A Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred. Assessment is limited to analysis of the following properties: density, melting point, boiling point, solubility, flammability, and odor.

SC.7.5.2.B Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

Assessment does not include the use of atomic masses, balancing symbolic equations, or intermolecular forces.

SC.7.5.2.C Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes. Assessment is limited to the criteria of amount, time, and temperature of substance in testing the device.

SC.7.5.2.D Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.


SC.7.7 Interdependent Relationships in Ecosystems

SC.7.7.3 Gather, analyze, and communicate evidence of interdependent relationships in ecosystems.

SC.7.7.3.A Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.

NE ecosystems

SC.7.7.3.B Evaluate competing design solutions for maintaining biodiversity and ecosystem services.

NE endangered species and reintroduction of species

 SC.7.7.3.C Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.

SC.7.7.3.D Apply scientific principles to design a method for monitoring and increasing positive human impact on the environment.


SC.7.8 Matter and Energy in Organisms and Ecosystems

SC.7.8.4 Gather, analyze, and communicate evidence of the flow of energy and cycling of matter in organisms and ecosystems.

SC.7.8.4.A Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms. Assessment does not include the biochemical mechanisms of photosynthesis.

SC.7.8.4.B Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as matter moves through an organism. Assessment does not include details of the chemical reactions for photosynthesis or respiration.

SC.7.8.4.C Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.


NE plants and animals

SC.7.8.4.D Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem. Assessment does not include the use of chemical reactions to describe the processes.


NE ecosystems

SC.7.8.4.E Construct an argument supported by evidence that changes to physical or biological components of an ecosystem affect populations.


SC.7.13 Earth’s Systems

SC.7.13.5 Gather, analyze, and communicate evidence of the flow of energy and cycling of matter associated with Earth’s materials and processes.

SC.7.13.5.A Develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process. Assessment does not include the identification and naming of minerals.

SC.7.13.5.B Construct a scientific explanation based on evidence for how the uneven distributions of Earth’s mineral, energy, and groundwater resources are the result of past and current geoscience processes.


NE resources

SC.7.13.5.C Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth’s systems


SC.7.14 History of Earth

SC.7.14.6 Gather, analyze, and communicate evidence to explain Earth’s history.

SC.7.14.6.A Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.


NE geographic features

SC.7.14.6.B Analyze and interpret data on the distribution of fossils and rocks, continental shapes, and seafloor structures to provide evidence of past plate motions. Paleomagnetic anomalies in oceanic and continental crust are not assessed.

SC.7.14.6.C Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects.