7th GRADE SCIENCE STANDARDS

 

​PS Physical Sciences

CHEMICAL REACTIONS
7-PS1-2 Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
CHEMICAL COMPOSITION
1.    Compare physical and chemical changes
2.    Explore chemical structure and properties: soapmaking
3.    Explore chemical structure and properties: food flavors

CHEMICAL FORMULAS
2.    Classify elementary substances and compounds using chemical formulas
3.    Identify elementary substances and compounds using chemical formulas
4.    Sort elementary substances and compounds using chemical formulas

MODELS
5.    How are substances represented by chemical formulas and models?
6.    Match chemical formulas to ball-and-stick models
7.    Complete chemical formulas for ball-and-stick models
8.    Classify elementary substances and compounds using models
9.    Identify elementary substances and compounds using models
10.  Sort elementary substances and compounds using models

7-PS1-5 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.
1.    Count atoms and molecules in chemical reactions
2.    Calculate amounts of reactants or products in chemical reactions
7-PS1-6 Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.

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FORCES AND INTERACTIONS
7-PS2-3 Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.
1.    Compare magnitudes of magnetic forces
7-PS2-4 Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.
1.    Identify changes in gravitational potential energy
7-PS2-5 Conduct an investigation and evaluate the experimental design to provide evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.
 

ENERGY
7-PS3-2 Develop a model to describe that when the arrangement of objects interacting at a distance changes, different amounts of potential energy are stored in the system.
1.    Identify changes in gravitational potential energy
7-PS3-3 Apply scientific principles to design, construct, and test a device that either minimizes or maximizes thermal energy transfer.
1.    Predict heat flow and temperature changes
2.    Compare thermal energy transfers
7-PS3-4 Plan an investigation to determine the relationships among the energy transferred, the type of matter, the mass, and the change in the average kinetic energy of the particles as measured by the temperature of the sample.
1.    How does particle motion affect temperature?
7-PS3-5 Construct, use, and present arguments to support the claim that when the kinetic energy of an object changes, energy is transferred to or from the object.
1.    Explore energy transformations: roller coaster ride
2.    Explore energy transformations: bike ride

WAVES AND ELECTROMAGNETIC RADIATION
7-PS4-1 Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave.
1.    Compare amplitudes, wavelengths, and frequencies of waves
2.    Compare energy of waves
7-PS4-2 Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
7-PS4-3 Integrate qualitative scientific and technical information to support the claim that digitized signals are a more reliable way to encode and transmit information than analog signals.
 

LS Life Sciences
STRUCTURE, FUNCTION, AND INFORMATION PROCESSING
7-LS1-1 Conduct an investigation to provide evidence that living things are made of cells, either one cell or many different numbers and types of cells.
1.    Understanding cells

7-LS1-2 Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function.
UNDERSTANDING CELLS
1.    Understanding cells
2.    Compare cells and cell parts

ANIMAL CELLS
3.    Identify functions of animal cell parts
4.    Animal cell diagrams: label parts

PLANT CELLS
5.    Identify functions of plant cell parts
6.    Plant cell diagrams: label parts

7-LS1-3 Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
1.    Organization in the human body: the heart and the circulatory system

MATTER AND ENERGY IN ORGANISMS AND ECOSYSTEMS
7-LS1-6 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.
1.    How do plants use and change energy?
2.    Identify the photosynthetic organism
7-LS1-7 Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.
1.    Understanding the chemistry of cellular respiration

GROWTH, DEVELOPMENT, AND REPRODUCTION OF ORGANISMS
7-LS1-4 Use argument based on empirical evidence and scientific reasoning to support an explanation for how characteristic animal behaviors and specialized plant structures affect the probability of successful reproduction of animals and plants respectively.
1.    How can animal behaviors affect reproductive success? Identify evidence to support a claim
7-LS1-5 Construct a scientific explanation based on evidence for how environmental and genetic factors influence the growth of organisms.
1.    Inherited and acquired traits: use evidence to support a statement
2.    How do genes and the environment affect plant growth?

Engineering, Technology, and Applications of Science

ENGINEERING DESIGN
MS-ETS1-1 Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
1.    Identify parts of the engineering-design process
2.    Explore the engineering-design process: going to the Moon!
3.    Coral reef biodiversity and human uses: evaluate solutions
MS-ETS1-2 Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
1.    Identify parts of the engineering-design process
2.    Evaluate tests of engineering-design solutions
3.    Explore the engineering-design process: going to the Moon!
4.    Coral reef biodiversity and human uses: evaluate solutions
MS-ETS1-3 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.
1.    Use data from tests to compare engineering-design solutions
2.    Coral reef biodiversity and human uses: evaluate solutions
MS-ETS1-4 Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
1.    Explore the engineering-design process: going to the Moon!