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Skills available for Oklahoma eighth-grade science standards

Standards are in black and IXL science skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practice that skill.

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PS2 Motion and Stability: Forces and Interactions

  • 8.PS2.1 Apply Newton's Third Law to design a solution to a problem involving the motion of two colliding objects in a system.

  • 8.PS2.2 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 the mass of the object.

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

    • 8.PS2.3.1 Electric and magnetic (electromagnetic) forces can be attractive or repulsive, and their sizes depend on the magnitudes of the charges, currents, or magnetic strengths involved and on the distances between the interacting objects.

  • 8.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.

  • 8.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.

    • 8.PS2.5.1 Forces that act at a distance (electric, magnetic, and gravitational) can be explained by fields that extend through space and can be mapped by their effect on a test object (a charged object, or a ball, respectively).

PS4 Waves and Their Applications in Technologies for Information Transfer

  • 8.PS4.1 Use mathematical representations to describe patterns in a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave.

  • 8.PS4.3 Integrate qualitative scientific and technical information to support the claim that digitized signals (sent as wave pulses) are a more reliable way to encode and transmit information.

    • 8.PS4.3.1 Many modern communications devices use digitized signals (sent as wave pulses) are a more reliable way to encode and transmit information.

LS1 From Molecules to Organisms: Structure and Processes

  • 8.LS1.4 Use arguments 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.

  • 8.LS1.5 Construct a scientific explanation based on evidence for how environmental and genetic factors influence the growth of organisms.

    • 8.LS1.5.1 Genetic factors, as well as local conditions, affect the growth of the adult plant.

LS3 Heredity: Inheritance and Variation of Traits

LS4 Biological Unity and Diversity

  • 8.LS4.1 Analyze and interpret data to identify patterns within the fossil record that document the existence, diversity, extinction, and change of life forms throughout the history of life on Earth.

    • 8.LS4.1.1 The collection of fossils and their placement in chronological order (e.g., through the location of the sedimentary layers in which they are found) is known as the fossil record. It documents the existence, diversity, extinction, and change of many life forms throughout the history of life on Earth.

    • 8.LS4.1.2 Because of the conditions necessary for their preservation, not all types of organisms that existed in the past have left fossils that can be retrieved.

  • 8.LS4.2 Apply scientific ideas to construct an explanation for the patterns of anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer ancestral relationships.

    • 8.LS4.2.1 Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record serve as evidence of ancestral relationships among organisms and changes in populations over time.

  • 8.LS4.3 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.

    • 8.LS4.3.1 Comparison of embryological development of different species also reveals similarities that show relationships not evident in the fully-formed anatomy.

  • 8.LS4.4 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.

  • 8.LS4.5 Gather and synthesize information about the practices that have changed the way humans influence the inheritance of desired traits in organisms.

    • 8.LS4.5.1 In artificial selections, humans have the capacity to influence certain characteristics of organisms by selective breeding. One can choose desired parental traits by genes, which are then passed onto offspring.

    • 8.LS4.5.2 Engineering advances have led to important discoveries in virtually every field of science, and scientific discoveries have led to the development of entire industries and engineered systems.

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

ESS1 Earth's Place in the Universe

  • 8.ESS1.1 Develop and use a model of the Earth-sun-moon system to describe the cyclic patterns of lunar phases, eclipses of the sun and moon, and seasons.

    • 8.ESS1.1.1 Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, described, predicted, and explained with models.

    • 8.ESS1.1.2 The model of the solar system can explain eclipses of the sun and the moon.

    • 8.ESS1.1.3 Earth's spin axis is fixed in direction over the short term, but tilted relative to its orbit around the sun. The seasons are a result of it'stilt and are caused by the differential intensity of sunlight on different areas of Earth across the year.

  • 8.ESS1.2 Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system.

    • 8.ESS1.2.1 Earth and its solar system are part of the Milky Way Galaxy, which is one of the many galaxies in the universe.

    • 8.ESS1.2.2 The solar system consists of the sun and a collection of objects, including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them.

    • 8.ESS1.2.3 The solar system appears to have formed from a disk of dust and gas, drawn together by gravity.

  • 8.ESS1.3 Analyze and interpret data to determine scale properties of objects in the solar system.