Grade 7 Science Worksheets

Learning Objectives

• Understand the types of technologies used in space observation and exploration.
• Identify key historical space missions and their contributions.
• Explain how satellites, telescopes, and spacecraft gather data beyond Earth.+ Show more

Learning Objectives

• Understand the origins and formation of the solar system.
• Identify key properties and features of planets and other celestial bodies.
• Compare and contrast terrestrial and gas giant planets.+ Show more

Learning Objectives

• Understand how nonliving factors such as temperature, light, water, soil, and salinity influence species distributions and ecosystems.
• Explain the concept of environmental gradients and microclimate effects on organism tolerances.
• Describe how abiotic factors interact with biotic relationships to shape biodiversity and community structure.+ Show more

Learning Objectives

• Understand the process and factors that contribute to technological innovation over time.
• Identify examples of inventions and innovations across different historical periods.
• Analyze causes, diffusion, and modifications that lead to technological advancements.+ Show more

Learning Objectives

• Describe different species interactions that influence ecological niches.
• Identify examples of mutualism, predation, competition, and parasitism in ecosystems.
• Explain how niche partitioning reduces competition among species.+ Show more

Learning Objectives

• Describe the cyclic patterns produced by the relative motions of the Sun, Earth, and Moon.
• Explain how orbital geometry and axial tilt account for day-night cycles and phases.
• Identify observable evidence of solar system patterns and explain their causal relationships.+ Show more

Learning Objectives

• Explain how net force affects acceleration and changes in velocity (speed and direction).
• Distinguish between balanced and unbalanced forces using real-world examples.
• Identify how friction, air resistance, and gravity influence motion near Earth.

Learning Objectives

• Explain how structural and behavioral adaptations link form to function in living things.
• Identify examples of adaptations that support life processes such as gas exchange, protection, and water regulation.
• Describe how trade-offs can constrain the performance of traits in different conditions.

Learning Objectives

• Explain how internal structures and external features help organisms survive, grow, and reproduce
• Identify how different traits increase an organism’s chance of obtaining resources and avoiding danger
• Use functional relationships to describe how structures support transport, digestion, and coordination

Learning Objectives

• Explain how changes in climate and habitat conditions can affect ecosystem survival and reproduction
• Describe how changes in water quality and pollution can alter growth, mortality, and population size
• Analyze how shifts in key species can change predation, competition, and symbiosis within an ecosystem

Learning Objectives

• Describe how natural climate records (ice cores, sediment layers, and tree rings) can be used to infer past temperature and precipitation.
• Explain how modern instruments provide evidence of recent climate trends.
• Identify major climate drivers over time and describe how they can change Earth’s energy balance and circulation.

Learning Objectives

• Define scientific inquiry as systematic observation, question formulation, hypothesis development, and measurement.
• Distinguish between quantitative and qualitative observations and identify appropriate measurement units.
• Recognize sources of error in scientific experiments and data collection.+ Show more

Learning Objectives

• Explain how energy flows within ecosystems through food chains, webs, and trophic pyramids.
• Describe the cycling of matter, including nutrients like carbon and water, in different ecosystems.
• Analyze how changes in energy pathways or inputs affect community structure and ecosystem processes.+ Show more

Learning Objectives

• Explain the conservation of matter principle for chemical reactions.
• Use mass measurements to predict whether total mass changes during a reaction.
• Describe how atoms are reorganized during chemical reactions without being created or destroyed.

Learning Objectives

• Distinguish balanced and unbalanced forces using the idea of net force
• Explain how balanced forces lead to constant velocity and unbalanced forces lead to acceleration
• Use tug-of-war scenarios to predict motion outcomes based on force strength and direction

Learning Objectives

• Explain the difference between weather and climate using examples
• Identify key variables of weather (temperature, precipitation, humidity, wind)
• Describe how climate is determined by long-term averages and variability

Learning Objectives

• Classify matter as an element, compound, or mixture based on composition and particle relationships.
• Distinguish homogeneous mixtures from heterogeneous mixtures using observable uniformity or visible parts.
• Use classification to predict what may happen during physical and chemical changes in matter.

Learning Objectives

• Explain how energy transfers from higher-energy systems to lower-energy systems.
• Identify ways energy can transform (such as thermal, kinetic, and light energy) during everyday events.
• Connect energy transfer to observable effects like temperature change, motion, and light emission.+ Show more

Learning Objectives

• Understand the key elements of designing a fair experiment.
• Identify and define variables in experimental setups.
• Learn the importance of reproducibility, sample size, and safety considerations.+ Show more

Learning Objectives

• Define explanatory models and explain why they are simplified rather than exact replicas of real systems.
• Describe how cause-and-effect mechanisms and energy transfers can be used in explanations based on a model.
• Evaluate a model’s usefulness by comparing how well it matches observations and how accurately it predicts new evidence.

Learning Objectives

• Explain how empirical investigations and evidence support scientific explanations
• Evaluate how new data can refine, adjust, or replace scientific models
• Describe uncertainty as a normal part of scientific reasoning and communicate methods transparently+ Show more

Learning Objectives

• Explain how technologies can create both benefits and costs for society and the environment
• Identify ethical considerations such as fairness, privacy, and responsibility across a product’s life cycle
• Connect engineering design choices to real-world consequences for people and ecosystems+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in a science investigation
• Explain why controlled variables make comparisons fair
• Use tables and graphs to connect changes in the dependent variable to the independent variable

Learning Objectives

• Understand the processes involved in decomposition and nutrient cycling.
• Identify roles of detritivores, fungi, bacteria, and abiotic factors in decomposition.
• Describe carbon and nitrogen transformations during organic matter breakdown.+ Show more

Learning Objectives

• Distinguish physical changes from chemical changes based on whether a new substance forms
• Identify common indicators of chemical change (color change, gas production, precipitate formation, temperature change)
• Classify everyday examples of matter changes as physical or chemical using evidence

Learning Objectives

• Explain how test results guide specific design revisions using success criteria and evidence.
• Identify examples of design changes that improve performance while respecting constraints (safety, materials, and cost).
• Describe how to justify revisions by linking measurements to the cause of failure and expected improvement.

Learning Objectives

• Describe the processes involved in atmospheric energy transfer and circulation.
• Explain how air masses, pressure gradients, and large-scale circulation affect weather and climate.
• Identify observational phenomena like fronts and jet streams and their impacts.+ Show more

Learning Objectives

• Explain how friction and other resistive forces oppose motion
• Describe how surface texture and air resistance affect how quickly objects slow down
• Connect resistive forces to changes in motion and energy during real-world examples

Learning Objectives

• Identify and describe the purpose of variables in controlled experiments.
• Understand methods for managing variables, including control groups, randomization, and replication.
• Explain how systematic variable management reduces confounding influences.+ Show more

Learning Objectives

• Describe Earth's internal layering and the properties of each layer.
• Explain seismic wave behavior as evidence for Earth's internal structure.
• Understand mantle convection and its role in plate motion.+ Show more

Learning Objectives

• Interpret variability and measures of central tendency to assess data consistency
• Use graphical cues such as box plots and histograms to evaluate reliability and significance
• Compare and calculate mean, median, and range across data sets+ Show more

Learning Objectives

• Differentiate between mass and weight and explain how they are related to gravity
• Describe how gravity acts as a net force on falling objects and how it affects motion
• Use evidence from comparing different masses to support the idea that gravity provides the same type of force in the same gravitational field

Learning Objectives

• Identify the major organelles within a cell and describe their functions.
• Compare the roles of different organelles such as nucleus, mitochondria, chloroplasts, and cell membranes.
• Explain how cellular structures relate to tissue and organ function in multicellular organisms.+ Show more

Learning Objectives

• Explain how inclined planes change the effective force needed to move a load.
• Identify and describe force components parallel and perpendicular to a ramp.
• Calculate mechanical advantage using load and input force.+ Show more

Learning Objectives

• Explain how energy moves through ecosystems from producers to consumers to decomposers.
• Describe why each energy transfer to the next trophic level reduces the amount of usable energy.
• Use trophic-level ideas to predict how changes in one organism group can affect other groups.

Learning Objectives

• Explain how inherited traits are passed from parents to offspring using genetic information in reproductive cells
• Distinguish between inherited traits and environmental causes of differences among individuals
• Use predictable patterns to interpret offspring trait outcomes based on parental variation

Learning Objectives

• Explain how ecological inquiry uses questions, observations, and evidence to evaluate relationships in ecosystems.
• Identify measurable variables and justify why they are chosen within defined limits.
• Interpret ecological data while considering natural variability and human impacts.

Learning Objectives

• Explain what ecological models are and why scientists use them to study ecosystems.
• Distinguish conceptual models from quantitative models and identify appropriate inputs for each.
• Describe how model assumptions and limitations affect predictions and how verification with observations improves model reliability.

Learning Objectives

• Explain how supports, foundations, and load paths work together to maintain structural stability.
• Differentiate compression, tension, and shear and predict where each force appears in common structures.
• Identify how material properties (stiffness, strength, durability) help determine safety under wind and snow loads.

Learning Objectives

• Classify bitumen separation steps as physical or chemical processes based on how substances change.
• Explain how density, particle size, temperature, and additives affect emulsions and dissolved organics.
• Use evidence from a process description to describe mixture behavior and expected product outcomes.

Learning Objectives

• Explain how the law of conservation of mass applies to closed or near-closed systems
• Use mass budgeting ideas to relate reactants, products, and measurable masses in reaction and environmental contexts
• Interpret differences between measured and expected mass outcomes using conservation-based reasoning+ Show more

Learning Objectives

• Explain how system models trace energy pathways and identify where energy is transformed or transferred.
• Use energy accounting to relate energy inputs, useful outputs, and waste heat in mechanical and industrial systems.
• Interpret Sankey-style energy flow diagrams to estimate efficiency and dominant loss mechanisms.+ Show more

Learning Objectives

• Explain Newton’s third law using the action-reaction force pair idea
• Identify action-reaction forces in contact and noncontact situations (including gravity)
• Use force and mass reasoning to predict acceleration direction and relative size

Learning Objectives

• Explain density as mass per unit volume using the particle (arrangement and spacing) view
• Interpret how particle spacing affects density and how this relates to sinking and floating
• Predict how heating can change density when particle spacing increases

Learning Objectives

• Explain how biodiversity helps ecosystems stay stable after disturbances.
• Describe how overlapping species roles can buffer the impacts of species declines.
• Identify examples of disturbances that reduce biodiversity and increase ecosystem vulnerability.

Learning Objectives

• Explain why evolutionary change happens at the population level rather than the individual level.
• Describe how heritable variation can lead to certain traits becoming more common over generations.
• Use evidence and examples to connect evolutionary change to changing environments.

Learning Objectives

• Explain how tectonic activity, weathering, erosion, and deposition shape Earth’s surface.
• Distinguish between weathering and erosion using examples from real landscapes.
• Describe how deposition can change the location of sediments over time.+ Show more

Learning Objectives

• Explain how runoff, erosion, and deposition can rapidly change Earth’s surface after heavy rainfall
• Describe how storms can reshape coastal landforms such as dunes and beaches
• Identify examples of sudden and gradual surface changes caused by earthquakes and volcanic activity