Grade 7 Worksheets

Learning Objectives

• Use metric units and prefixes to report measurements with appropriate precision and units.
• Estimate uncertainty by comparing repeated measurements and documenting variability.
• Select suitable measuring tools and calibrate instruments to reduce systematic error.+ Show more

Learning Objectives

• Explain the difference between design criteria and design constraints in a solution design
• Identify examples of measurable criteria and limiting constraints in a real-world problem
• Describe how human needs and environmental impacts influence acceptable design outcomes

Learning Objectives

• Describe how competition, predation, mutualism, and parasitism affect species interactions and ecological niches
• Explain how niche partitioning reduces competition and helps multiple species coexist
• Identify how keystone species influence community composition and stability+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in a food web and why decomposers matter for energy flow.
• Describe how photosynthesis captures energy and cellular respiration releases energy in living things.
• Use energy pyramids to model the decrease in available energy between trophic levels and relate this to population size.

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

• Explain tradeoffs among freshwater options such as storage, recharge, recycling, and desalination.
• Identify design constraints (quality, infrastructure limits, ecosystem impacts) that affect water-system decisions.
• Use cause-and-effect reasoning to predict how changes in a water system can impact reliability and pollution risk.

Learning Objectives

• Understand the basic quantities used to describe motion: distance, time, and speed.
• Learn how to interpret and represent data related to motion.
• Calculate average speed given distance and time.

Learning Objectives

• Explain the conservation of mass rule for a closed system during physical and chemical changes.
• Use the idea that atoms are conserved to predict whether total mass changes after a reaction in a sealed container.
• Identify key details about reactants, products, and the role of the closed system.

Learning Objectives

• Understand the concept of friction and how it affects motion
• Identify different types of friction in everyday situations
• Explain how surface texture influences friction+ Show more

Learning Objectives

• Explain how international friendship supports peaceful relationships between countries.
• Identify key ideas from a short text about collaboration, empathy, and human rights.
• Use vocabulary related to diplomacy, respect, and cooperation to complete sentences.+ Show more

Learning Objectives

• Define what a closed system is in scientific terms.
• Explain why mass appears to stay constant in a closed system during reactions.
• Distinguish between open and closed systems based on matter transfer.+ Show more

Learning Objectives

• Explain how cell structures match specific cell functions.
• Identify examples of specialized cells and describe what makes each one effective.
• Relate cell specialization to how tissues and organs perform their tasks.

Learning Objectives

• Describe the Earth system spheres (atmosphere, hydrosphere, geosphere, biosphere) and how they interact
• Explain how movement of water and gases connects the spheres and affects weather and ecosystems
• Predict how a change in one sphere can cause effects in other spheres

Learning Objectives

• Explain the principle of conservation of mass at the particle level in chemical reactions.
• Describe how atoms are conserved and rearranged during chemical processes.
• Recognize that in a closed system, the total mass remains the same before and after a reaction.+ Show more

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 inputs, outputs, and energy transfers in an energy system model.
• Explain how energy accounting reflects conservation of energy.
• Interpret simple energy flow ideas using useful output energy and waste heat.

Learning Objectives

• Explain how a keystone species can strongly affect ecosystem structure and biodiversity even when it is not the most abundant organism.
• Describe how removing a keystone species can cause trophic cascades and change energy flow through a food web.
• Use evidence from food webs to identify why keystone species are important for conservation planning.

Learning Objectives

• Explain how the particle model describes matter as atoms and molecules in constant motion.
• Describe how chemical changes involve breaking and forming bonds between particles.
• Use the particle model to justify why mass is conserved in a closed system.

Learning Objectives

• Explain how simple mechanisms transfer motion and force in engineered systems
• Describe how input energy produces output performance in a connected system
• Use examples of gears, pulleys, levers, and linkages to predict changes in speed and force

Learning Objectives

• Interpret symbolic chemical equations and explain what quantitative information they can (and cannot) provide about matter interactions.
• Read and compare graphs of mass or temperature versus time to determine trends such as reaction rate or energy change.
• Use tabulated experimental data and stoichiometric relationships to make quantitative comparisons.+ Show more

Learning Objectives

• Explain how groundwater is stored and how it moves through aquifers.
• Describe how recharge and infiltration affect groundwater availability over time.
• Analyze how groundwater pumping can change surface water flow and water quality.

Learning Objectives

• Interpret variability and assess the reliability of data sets using measures such as mean, median, and range.
• Analyze graphical representations like histograms and box plots to evaluate data spread and identify possible misconceptions.
• Compare data sets through replicated trials and proportional reasoning to determine consistency and significance of findings.+ Show more

Learning Objectives

• Understand the basic principles of chromatography and its importance in scientific analysis.
• Identify the different components of chromatography, including stationary and mobile phases.
• Explain how molecular polarity affects the separation of compounds.+ Show more

Learning Objectives

• Explain how energy moves through an ecosystem using producers, consumers, and decomposers
• Describe how photosynthesis supplies energy and how each trophic transfer reduces usable energy
• Interpret food chains and trophic levels to predict how changes at one level can affect others

Learning Objectives

• Explain how chloroplasts capture light energy and convert it into chemical energy during photosynthesis.
• Describe the roles of thylakoids and the stroma in forming ATP and NADPH and producing sugars.
• Connect chloroplast energy storage and starch production to plant energy needs and respiration in mitochondria.

Learning Objectives

• Define net force as the vector sum of all forces acting on an object.
• Describe how unbalanced forces cause changes in an object's motion.
• Use diagrams and reasoning to analyze the effects of forces, including friction and applied forces.+ Show more

Learning Objectives

• Distinguish quantitative observations from qualitative observations in everyday science scenarios.
• Select appropriate metric units and common instruments for measuring length, mass, and volume.
• Describe how a scientific inquiry uses observations, questions, hypotheses, measurements, and evidence.+ Show more

Learning Objectives

• Understand how clouds form through condensation and cooling.
• Identify different types of clouds based on height and appearance.
• Explain the process of precipitation and how water returns to Earth's surface.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in closed systems.
• Identify how mass is conserved during chemical reactions.
• Calculate mass relationships between reactants and products.+ Show more

Learning Objectives

• Differentiate weather from climate and explain why climate is based on long-term patterns
• Identify major climate drivers such as solar energy, atmospheric circulation, and the distribution of water
• Explain how ocean heat storage and release can influence regional climate trends+ Show more

Learning Objectives

• Explain how engineering designs respond to intended function and real-world constraints.
• Describe how loads and forces distribute through structural and mechanical systems (e.g., bridges and pulleys).
• Identify how circuits transfer electrical energy and how design choices affect safety and reliability.+ Show more

Learning Objectives

• Understand predator and prey relationships
• Identify examples of predator-prey interactions in ecosystems
• Explain the importance of predator-prey dynamics in maintaining ecological balance

Learning Objectives

• Understand how shear force is distributed along beams under various loads.
• Identify the effects of shear forces on structural stability.
• Learn to interpret shear diagrams and their implications for design.

Learning Objectives

• Identify the main components of a cell
• Understand the functions of cell membranes, nuclei, mitochondria, and organelles
• Recognize the diversity of cell structures in plants and animals

Learning Objectives

• Understand the principles of relative dating such as superposition, original horizontality, and cross-cutting relationships
• Identify markers in rock layers used for correlating strata
• Explain how fossil assemblages, unconformities, and intrusive contacts help establish the age of rock layers+ Show more

Learning Objectives

• Understand the role of decomposers in ecosystems
• Identify different decomposers such as fungi and bacteria
• Explain the process of decomposition and nutrient recycling+ Show more

Learning Objectives

• Understand how gears transfer motion and change speed or torque.
• Identify parts of a gear system.
• Explain the function of gears in machines.+ Show more

Learning Objectives

• Understand how Earth's tilt affects the Sun's apparent position and daylight hours during different seasons.
• Explain the reasons for opposite seasons in the Northern and Southern hemispheres.
• Describe how the distribution of solar energy varies throughout the year due to Earth's tilt and orbit.+ Show more

Learning Objectives

• Explain the mechanisms that lead to speciation, including reproductive isolation and geographic separation.
• Describe examples of biodiversity arising from speciation, such as cichlid radiations and plant polyploidy.
• Analyze how environmental changes influence the rates and patterns of species formation.+ Show more

Learning Objectives

• Understand the roles of supports, foundations, and load paths in structures
• Learn about compression, tension, and shear forces and their effects on beams, columns, and foundations
• Evaluate material properties such as stiffness, strength, and durability for structural safety under various conditions

Learning Objectives

• Understand the particle model as a framework for explaining matter's properties.
• Describe how particle spacing, motion, and forces relate to observable bulk properties.
• Connect micro-scale particle interactions to measurements like diffusion, expansion, and compressibility.+ Show more

Learning Objectives

• Explain how microscopic particle motion relates to temperature and average random kinetic energy.
• Differentiate between temperature and thermal energy using particle number and phase.
• Use particle-collision ideas to describe how thermal changes can affect pressure.+ Show more

Learning Objectives

• Understand the concept of scientific models and how they predict outcomes.
• Identify evidence used to evaluate the accuracy of models.
• Learn how to interpret computational simulations in model evaluation.+ Show more

Learning Objectives

• Describe the processes involved in the water cycle, including evaporation, condensation, and precipitation.
• Explain how water moves through Earth's spheres via processes like infiltration, runoff, and groundwater flow.
• Identify the interactions between different components of the water cycle, such as river discharge and groundwater contributions.+ Show more

Learning Objectives

• Understand how patterns in data can indicate reliability.
• Identify sources of error that affect experimental results.
• Develop reasoning skills to interpret variability and measurement quality.+ Show more

Learning Objectives

• Identify how authors use tone, imagery, figurative language, and sentence patterns to shape meaning
• Explain cause-and-effect relationships between author’s craft choices and their effects on the reader
• Analyze how informational and literary texts use different rhetorical moves to guide interpretation

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

• Understand how measurement tools have resolution limits affecting data accuracy.
• Explain the concept of uncertainty in repeated measurements and data interpretation.
• Interpret graphs and tables that include ranges or error estimates to evaluate data significance.+ Show more