Grade 7 Science Worksheets

Learning Objectives

• Explain how human activities can shift interactions among Earth’s spheres and the water cycle.
• Identify positive and negative feedback examples involving temperature, precipitation, erosion, and water quality.
• Use evidence from text and science ideas to predict how environmental changes can reinforce or reduce further change.

Learning Objectives

• Explain how internal (endogenetic) processes such as uplift, deformation, earthquakes, and volcanism can reshape Earth’s surface.
• Describe how external (exogenetic) processes such as erosion and sediment transport can build landforms like deltas and floodplains.
• Interpret surface-process evidence using rock strata, landform patterns, and connections to hazard histories.

Learning Objectives

• Explain how design criteria and constraints work together in a science/engineering design problem.
• Identify measurable or observable criteria that can be used to judge whether a solution improves performance.
• Describe how trade-offs can happen when meeting one requirement affects another.+ Show more

Learning Objectives

• Explain how weather data (temperature, wind, humidity, precipitation) can be compared across time and location to identify patterns.
• Distinguish weather from climate and describe how climate over time is influenced by multiple Earth systems.
• Use reading and data-based reasoning to select main ideas, judge statements as true/false, and respond to written prompts.

Learning Objectives

• Explain how fair testing keeps all conditions the same except the intended design variable.
• Choose appropriate measurement tools and describe measurements using correct units and scales.
• Interpret results by attributing differences to the design rather than to the testing setup.

Learning Objectives

• Identify common simple mechanisms (gears, pulleys, levers, and linkages) and describe how they transfer motion or force.
• Explain how an engineered system connects input energy to output performance using cause-and-effect reasoning.
• Use evidence from a mechanism (like gear ratio or lever position) to predict changes in speed and torque.

Learning Objectives

• Identify abiotic drivers (temperature gradients, light availability, soil composition, moisture regimes, and pH) and explain how they influence where organisms can survive.
• Describe how physical gradients create environmental templates that shape community structure.
• Explain how microhabitats within ponds, forests, and meadows differ because of abiotic variability and resources.+ Show more

Learning Objectives

• Explain how detritivores, fungi, bacteria, and abiotic factors work together during decomposition
• Describe carbon and nitrogen transformations that occur as organic matter breaks down
• Connect decomposition rates to soil fertility and productivity in different ecosystems

Learning Objectives

• Identify common hazards in laboratory and field contexts and locate relevant hazard information in Safety Data Sheets (SDS).
• Explain how likelihood and severity affect risk and how controls reduce risk using the hierarchy of controls.
• Describe appropriate emergency planning, signage, incident reporting, and ethical responsibilities for personal and community safety.

Learning Objectives

• Explain biodiversity as genetic, species, and ecosystem diversity
• Describe how richness, evenness, and habitat heterogeneity help measure biodiversity
• Interpret what biodiversity metrics can reveal about ecosystem resilience and ecosystem function+ Show more

Learning Objectives

• Explain how ecological inquiry uses observations and measurable variables to evaluate hypotheses.
• Identify how evidence supports conclusions while accounting for natural variability.
• Interpret ecological relationships and human impacts using data from a local context.

Learning Objectives

• Explain how long-term ecological monitoring uses standardized sampling to detect ecological trends.
• Compare common monitoring methods such as fixed-site surveys, point counts, remote sensing, and water quality sampling.
• Describe how sampling design and temporal replication improve data quality and interpretation over time.

Learning Objectives

• Explain how beam bending, shear, and deflection occur under different loads and support conditions
• Use span-to-depth ratio and material stiffness concepts to predict beam performance under service loads
• Identify how real-world examples (e.g., overpass girders and floor joists) relate to beam stability and comfort requirements

Learning Objectives

• Explain how an inclined plane changes the relationship between input force and distance traveled.
• Describe the parallel and perpendicular force components relative to a slope.
• Calculate and interpret mechanical advantage for inclined-plane situations.+ Show more

Learning Objectives

• Identify which steps in bitumen extraction are physical separations versus chemical treatments.
• Explain how density, particle size, temperature, and additives affect mixtures such as oil sands slurries and emulsions.
• Use classification ideas to describe how processing choices change the products made from bitumen-containing mixtures.

Learning Objectives

• Differentiate between biotic factors and abiotic factors in ecosystems.
• Explain how abiotic conditions influence which organisms can survive.
• Describe how changes in abiotic factors can shift biotic interactions and population sizes.

Learning Objectives

• Explain how solubility depends on the nature of solute and solvent, temperature, pressure (for gases), and surface area
• Describe how agitation and particle size affect the rate and extent of dissolution
• Use examples from everyday life to predict how changes in conditions affect dissolved materials

Learning Objectives

• Explain the role of calorimetry and energy conservation in predicting heat transfer.
• Use q = m · c · ΔT to relate temperature changes to energy transfer in joules.
• Identify how heat flows during melting, heating, and heat losses in real-world thermal scenarios.

Learning Objectives

• Distinguish between separations and chemical changes by linking outcomes to matter properties
• Explain how density differences can cause settling and layering during physical separation
• Use solubility differences to predict how mixtures can be separated by dissolving selectively

Learning Objectives

• Explain conservation of energy using energy transfers among forms such as mechanical and thermal energy
• Use friction and warming scenarios to describe how motion energy can become thermal energy
• Interpret simple energy model ideas (systems, surroundings, and energy redistribution) to predict temperature or motion changes

Learning Objectives

• Explain what a keystone species is and why its impact is disproportionate to its abundance
• Describe how removing a keystone species can cause trophic cascades and change ecosystem structure
• Identify keystone species using evidence from food webs and species interactions+ Show more

Learning Objectives

• Compare embryonic development stages across different taxa.
• Identify conserved developmental structures such as pharyngeal pouches and limb buds.
• Analyze how developmental timing supports evolutionary relationships.+ Show more

Learning Objectives

• Understand different representations of atomic structures such as particle, ball-and-stick, and lattice models.
• Identify how atomic models illustrate molecular and extended structures like water molecules and salt crystals.
• Connect subatomic particle relationships to atomic number and chemical formulas.+ Show more

Learning Objectives

• Identify different types of anatomical structures that provide evidence for evolution.
• Differentiate between homologous and analogous structures through examples.
• Understand how morphological and genetic data contribute to phylogenetic analysis.+ Show more

Learning Objectives

• Analyze patterns in the fossil record to understand evolutionary relationships.
• Identify key concepts such as stratigraphy, index fossils, and transitional forms.
• Interpret data from fossil assemblages and understand their significance in macroevolution.+ Show more

Learning Objectives

• Understand how mathematical and statistical tools are used to analyze evolutionary processes.
• Apply concepts like allele frequency, Hardy-Weinberg equilibrium, and population dynamics to real data.
• Interpret graphical displays of fitness and trait changes over time.+ Show more

Learning Objectives

• Explain how the circulatory, respiratory, and digestive systems work together to support life functions
• Describe how specialized structures (capillaries and alveoli) increase the efficiency of gas and nutrient exchange
• Use scientific vocabulary to connect organ system roles to cellular needs for oxygen, nutrients, and removal of wastes

Learning Objectives

• Understand the mechanisms that lead to speciation and biodiversity.
• Identify different types of reproductive barriers and their roles in lineage divergence.
• Describe examples of adaptive radiation and plant polyploid speciation.+ Show more

Learning Objectives

• Distinguish between physical and chemical properties of materials.
• Identify measurable descriptors such as density, melting point, and solubility.
• Analyze data to classify materials and predict responses to temperature and chemical contact.+ Show more

Learning Objectives

• Differentiate between homogeneous and heterogeneous mixtures
• Identify examples of solutions, colloids, and suspensions
• Understand solubility, saturation, and concentration concepts+ Show more

Learning Objectives

• Identify observable signs indicating a chemical reaction has occurred.
• Explain the significance of mass conservation in chemical reactions.
• Differentiate between physical and chemical changes based on evidence and energy considerations.+ Show more

Learning Objectives

• Identify different types of representations used to convey matter interactions.
• Interpret graphs, equations, and tabulated data in scientific contexts.
• Select appropriate representations for quantitative comparison and communication.+ Show more

Learning Objectives

• Understand the concept of mole ratios and how they relate to balanced chemical equations.
• Apply ratio reasoning to calculate amounts of reactants and products in chemical reactions.
• Use conservation principles to predict reagent needs and product yields.+ Show more

Learning Objectives

• Describe the production pathways from natural resources to common synthetic materials.
• Explain the processes of polymerization, refining, and chemical alteration in manufacturing.
• Identify examples of synthetic materials like polyethylene, PET, and nylon and their production steps.+ Show more

Learning Objectives

• Understand how physical and biological disturbances impact ecosystems.
• Identify examples of disturbances such as wildfire, flooding, invasive species, and disease outbreaks.
• Explain mechanisms of resilience, resistance, and succession in ecosystem recovery.+ Show more

Learning Objectives

• Understand different management strategies for maintaining biodiversity and ecosystem services.
• Evaluate the benefits and potential unintended consequences of habitat corridors and protected areas.
• Compare ecological, economic, and social trade-offs in biodiversity conservation approaches.+ Show more

Learning Objectives

• Explain the transfer of energy through trophic levels in ecosystems.
• Identify the roles of producers, consumers, and decomposers in energy pyramids.
• Describe how photosynthesis and cellular respiration are mechanisms for energy capture and release.+ Show more

Learning Objectives

• Understand how resource availability influences population growth and decline.
• Interpret logistic growth curves and concepts of carrying capacity.
• Analyze how competition affects ecosystem populations using real-world examples.+ Show more

Learning Objectives

• Describe different types of species interactions such as predation, competition, parasitism, mutualism, and commensalism.
• Analyze food web diagrams to understand direct and indirect effects among species.
• Identify examples of species interactions in terrestrial and aquatic ecosystems.+ Show more

Learning Objectives

• Observe plant epidermis and protists using microscopy to identify cellular structures.
• Differentiate between unicellular and multicellular organisms based on microscopic observations.
• Understand the hierarchical organization from cells to tissues and organs.+ Show more

Learning Objectives

• Identify and describe the functions of key organelles in plant and animal cells.
• Connect cell structure to its role in processes like transport, synthesis, and compartmentalization.
• Compare eukaryotic and prokaryotic cells, highlighting differences in organization and specialization.+ Show more

Learning Objectives

• Describe how matter is recycled within organisms through processes like digestion, biosynthesis, and respiration.
• Explain the flow of carbon and nitrogen in biological systems and their transformation during metabolic pathways.
• Identify key biochemical pathways involved in matter cycling, such as macromolecule synthesis and decomposition.+ Show more

Learning Objectives

• Describe the functions and interactions of circulatory, respiratory, digestive, and nervous systems in multicellular animals.
• Explain system-level dependencies such as oxygen transport and nutrient absorption.
• Compare human mammalian organ systems with plant vascular transport interactions.+ Show more

Learning Objectives

• Describe how light energy is converted into chemical energy during photosynthesis.
• Explain how organisms harvest energy from food through cellular respiration.
• Connect the processes of photosynthesis and respiration across different taxa.+ Show more

Learning Objectives

• Identify key drivers of climate change such as greenhouse gases, land-use change, and natural variability.
• Analyze temperature and CO2 records to understand climate trends.
• Assess impacts of climate change on sea levels, precipitation, and agriculture.+ Show more

Learning Objectives

• Understand how human activities affect ecosystems and environment.
• Identify scientific tools used to monitor environmental changes.
• Analyze mitigation strategies for reducing human impacts.+ Show more

Learning Objectives

• Analyze how population growth affects demand for water, energy, land, and resources.
• Evaluate environmental consequences of increased consumption and urbanization.
• Compare regional examples of resource use and environmental pressures.+ Show more

Learning Objectives

• Identify different types of natural hazards and their characteristics.
• Interpret historical and instrumental data to analyze hazard patterns.
• Understand the concepts of recurrence intervals and hazard maps.+ Show more