What's New: Science Worksheets and Study Guides

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Agents of Erosion and Deposition Seventh Grade Science
Exploring the Oceans/Oceanography Seventh Grade Science
Work and machines Seventh Grade Science
Photosynthesis and Respiration Seventh Grade Science
Cell Reproduction Seventh Grade Science
Earthquakes Eighth Grade Science

National STEM Standards for Eighth Grade Science

STEM.S. SCIENCE: Next Generation Science Standards (NGSS)


MS-ESS1. Earth’s Place in the Universe
Students who demonstrate understanding can:
MS-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.MS-ESS1-2. Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system.MS-ESS1-4. 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-ESS2. Earth’s Systems
Students who demonstrate understanding can:
MS-ESS2-2. Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.MS-ESS2-3. Analyze and interpret data on the distribution of fossils and rocks, continental shapes, and seafloor structures to provide evidence of the past plate motions.MS-ESS2-4. Develop a model to describe the cycling of water through Earth’s systems driven by energy from the sun and the force of gravity.MS-ESS2-5. Collect data to provide evidence for how the motions and complex interactions of air masses results in changes in weather conditions.MS-ESS2-6. Develop and use a model to describe how unequal heating and rotation of the Earth cause patterns of atmospheric and oceanic circulation that determine regional climates.
MS-ESS3. Earth and Human Activity
Students who demonstrate understanding can:
MS-ESS3-1. 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.MS-ESS3-2. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects.MS-ESS3-3. Apply scientific principles to design a method for monitoring and minimizing a human impact on the environment.MS-ESS3-4. Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth’s systems.MS-ESS3-5. Ask questions to clarify evidence of the factors that have caused the rise in global temperatures over the past century.


MS-LS1. From Molecules to Organisms: Structures and Processes
Students who demonstrate understanding can:
MS-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.MS-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.MS-LS1-3. Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.MS-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.MS-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.MS-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.MS-LS1-8. Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.
MS-LS2. Ecosystems: Interactions, Energy, and Dynamics
Students who demonstrate understanding can:
MS-LS2-2. Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.MS-LS2-3. Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.MS-LS2-4. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
MS-LS3. Heredity: Inheritance and Variation of Traits
Students who demonstrate understanding can:
MS-LS3-1. 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-LS3-2. 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-LS4. Biological Evolution: Unity and Diversity
Students who demonstrate understanding can:
MS-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.MS-LS4-5. Gather and synthesize information about the technologies that have changed the way humans influence the inheritance of desired traits in organisms.MS-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.


MS-PS1. Matter and Its Interactions
Students who demonstrate understanding can:
MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures.MS-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.MS-PS1-4. 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.MS-PS1-6. Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
MS-PS2. Motion and Stability: Forces and Interactions
Students who demonstrate understanding can:
MS-PS2-1. Apply Newton’s Third Law to design a solution to a problem involving the motion of two colliding objects.MS-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.MS-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.
MS-PS3. Energy
Students who demonstrate understanding can:
MS-PS3-1. Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.MS-PS3-3. Apply scientific principles to design, construct, and test a device that either minimizes or maximizes thermal energy transfer.MS-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.MS-PS3-5. Construct, use, and present arguments to support the claim that when the motion energy of an object changes, energy is transferred to or from the object.
MS-PS4. Waves and Their Applications in Technologies for Information Transfer
Students who demonstrate understanding can:
MS-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.MS-PS4-2. Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.

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