8th Grade
Science


Geologic Time Scale

Development and Genetics

Traits and Adaptations

Performance Expectations

  • Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth’s 4.6 billion year-old history (MS-ESS1.4)

  • Analyze and interpret data for patterns in the fossil record that document the existence, diversity, extinction, and change of life forms throughout the history of life on Earth under the assumption that natural laws operate today as in the past (MS-LS4.1)

Performance Expectations

  • Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism. (MS-LS3-1)

  • Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation. (MS-LS3-2)

  • Gather and synthesize information about the technologies that have changed the way humans influence the inheritance of desired traits in organisms. (MS-LS4-5)

Performance Expectations

  • Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships. (MS-LS4.2)

  • Analyze displays of pictorial data to compare patterns of similarities in the embryological development across multiple species to identify relationships not evident in the fully formed anatomy. (MS-LS4.3)

  • Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals’ probability of surviving and reproducing in a specific environment. (MS-LS4.4)

  • Use mathematical representations to support explanations of how natural selection may lead to increases and decreases of specific traits in populations over time. (MS-LS4.6)

  • Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth's systems. (MS-ESS3.4)

Forces and Motion

Energy

Waves

Performance Expectations

  • Apply Newton’s Third Law to design a solution to a problem involving the motion of two colliding objects (MS-PS2.1)

  • Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and mass of the object (MS-PS2.2)

  • Ask questions about data to determine the factors that affect the strength of electric and magnetic forces (MS-PS2.3)

  • Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects (MS-PS2.4)

  • 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 (MS-PS2.5)

  • Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristic of each that can be combined into a new solution to better meet the criteria for success. (MS-ETS1-3)

  • 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. (MS-ETS1-4)

Performance Expectations

  • Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and the speed of an object (MS-PS3.1)

  • 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 (MS-PS3.2)

Performance Expectations

  • 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 (MS-PS4.1)

  • Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials (MS-PS4.2)

  • Integrate qualitative scientific and technical information to support the clam that digitized signals are a more reliable way to encode and transmit information than analog signals (MS-PS4.3)

Texts and Resources

Holt Science and Technology Series

Cells, Heredity and Classification

Forces and Motion


Digital Resources

Amplify Science Curriculum

Explore Learning - Gizmos


Videos

Visual Learning Systems- related titles; Journey of Man