Grade 7 Science Worksheets

Learning Objectives

• Explain conservation of matter in a closed system using the idea that atoms are rearranged, not created or destroyed.
• Use evidence from comparing the mass of reactants and products to support the law of conservation of mass.
• Distinguish between physical changes (mixing/dissolving) and chemical changes (new substances) while tracking total matter.

Learning Objectives

• Compare scaled physical models, digital finite-element models (FEM), and laboratory load rigs for evaluating strength, stiffness, and failure modes.
• Explain how instrumentation such as strain gauges and displacement transducers are used to quantify structural response.
• Identify limitations of scaling and describe how prototype test results can guide design revisions and risk assessment.

Learning Objectives

• Explain how biodiversity helps ecosystems remain stable after disturbances.
• Describe how overlapping ecological roles can buffer the loss of a species.
• Identify examples of disturbances that reduce biodiversity and increase ecosystem vulnerability.

Learning Objectives

• Describe abiotic drivers such as temperature, light, soil, moisture, and pH and their roles in ecosystems.
• Explain how abiotic factors influence resource distribution and organismal tolerance.
• Identify microhabitats and their abiotic characteristics in pond, forest, and meadow environments.+ Show more

Learning Objectives

• Understand how scientific reasoning uses specific data references to support claims.
• Identify evidence such as graph changes, value comparisons, and observations that support scientific claims.
• Explain how evidence supports claims by using appropriate relationships, units, and explanations.+ Show more

Learning Objectives

• Understand the difference between heat and temperature.
• Learn about specific heat capacity and heat transfer.
• Practice basic heat calculations using Q=mcΔT.+ Show more

Learning Objectives

• Understand how Earth's rotation causes day and night.
• Identify the relationship between the Sun's position and Earth's daily cycle.
• Recognize the effect of axial tilt and orbit on solar patterns.

Learning Objectives

• Understand how allele frequencies are calculated from population data.
• Learn the importance of quantitative models in explaining evolutionary processes.
• Analyze trait distributions and their changes over generations.+ Show more

Learning Objectives

• Organize scientific observations using clear tables with consistent headings and correct units for numerical data.
• Use appropriate metadata and timestamp conventions to preserve provenance and support later validation.
• Distinguish between categorical and numerical data and record replication information in an observational log.

Learning Objectives

• Understand how mathematical representations support explanations of evolutionary processes.
• Interpret statistical analyses related to trait frequencies, selection coefficients, and population dynamics.
• Apply Hardy-Weinberg principles and rate calculations to real-world genetic data.+ Show more

Learning Objectives

• Describe how pressure, volume, and temperature interdependently affect gases.
• Explain phenomena such as diffusion and compressibility in gases.
• Relate macroscopic observations to the qualitative relationships among gas variables.

Learning Objectives

• Explain how tensile, compression, and bending tests reveal key material properties used in structural design.
• Compare non-destructive testing (NDT) methods such as ultrasonic and hardness measurements with destructive tests.
• Describe how anisotropy and strain localization can affect the performance of timber and composite materials.+ Show more

Learning Objectives

• Explain how gravitational potential energy changes into kinetic energy during motion in a mechanical system
• Use mass, height (elevation), and speed to reason about relative mechanical energy and forces
• Describe how energy conservation applies when friction is small and how real systems differ+ Show more

Learning Objectives

• Understand the types of technologies used in space exploration, such as telescopes, satellites, and spacecraft.
• Identify major historical missions and their contributions to space observation.
• Explain how robotic missions and space stations enhance data collection and scientific research.+ Show more

Learning Objectives

• Define a science/engineering design problem using clear criteria and measurable success targets
• Identify constraints as limits related to materials, safety, time, and cost
• Translate real-world needs into quantitative performance metrics and acceptable boundaries

Learning Objectives

• Explain how evidence such as seafloor structures, earthquakes, and volcanoes supports the idea of moving tectonic plates.
• Use fossil distributions and continental margin features to infer past continental positions.
• Describe how magnetic striping and mountain building relate to plate motion and paleogeographic reconstructions.

Learning Objectives

• Understand what air masses are and how they are classified.
• Identify the characteristics of different air masses.
• Explain what fronts are and how they form.+ Show more

Learning Objectives

• Understand the water cycle and how water moves among Earth's systems.
• Identify the interactions between the geosphere, hydrosphere, atmosphere, and biosphere.
• Explain how changes in one earth system can affect others.+ Show more

Learning Objectives

• Explain how matter and energy move through ecosystems using producers, consumers, and decomposers
• Describe how energy transfers through food chains and food webs and why less energy reaches higher trophic levels
• Connect the roles of metabolism and heat loss to patterns of energy flow in ecosystems+ Show more

Learning Objectives

• Explain how nutrients move from digestion to body tissues through internal transport
• Describe how cells use transported nutrients for growth, repair, and energy
• Identify how the body removes wastes to maintain internal balance+ Show more

Learning Objectives

• Understand the basic concept of evolution and how it involves populations, not individuals.
• Recognize genetic variation as the foundation for evolutionary change.
• Identify examples of changes in populations over generations.+ Show more

Learning Objectives

• Define thermal expansion and explain how particles behave when heated.
• Describe how solids, liquids, and gases respond differently to heat.
• Identify real-world examples of thermal expansion and contraction.+ Show more

Learning Objectives

• Understand the cause-and-effect relationships between predator and prey populations.
• Identify how changes in predator numbers affect prey populations and vice versa.
• Analyze feedback mechanisms in ecological communities.

Learning Objectives

• Define static equilibrium and identify its characteristics.
• Analyze real-world structures to recognize balanced forces.
• Explain the importance of equilibrium in safety and design of structures.

Learning Objectives

• Understand the components of Earth's atmosphere and their functions.
• Learn how the atmosphere interacts with other Earth system spheres.
• Recognize the importance of the atmosphere to living things and the environment.

Learning Objectives

• Explain how ecological inquiry uses hypotheses, measurable variables, and evidence to support conclusions.
• Identify examples of variables and explain why limits and natural variability matter when interpreting ecological data.
• Use data and reasoning to evaluate how human activities can affect ecological relationships.

Learning Objectives

• Understand the differences in thermal conductivity among metals, ceramics, polymers, and composites.
• Analyze how factors such as free electrons, lattice vibrations, density, porosity, and moisture affect heat transfer.
• Compare qualitative measures used to rank materials for heat dissipation and retention.+ Show more

Learning Objectives

• Understand the concept of mantle convection and its role in plate movement.
• Identify different force mechanisms driving plate tectonics.
• Explain how convection cells influence Earth's surface features.

Learning Objectives

• Understand the concept of mechanical energy in systems like pendulums
• Identify how energy transfers between potential and kinetic forms
• Recognize observable effects of energy conservation and loss in simple systems+ Show more

Learning Objectives

• Explain how static and kinetic friction oppose relative motion and affect acceleration and stopping distance.
• Describe aerodynamic drag as a force that opposes motion through air and influences speed of moving objects.
• Connect surface texture and normal force to changes in the frictional coefficient and real-world movement outcomes.

Learning Objectives

• Understand the concept of radiant energy transfer through electromagnetic waves
• Identify factors affecting radiative heating and cooling
• Recognize how solar angles and surface properties influence local microclimates

Learning Objectives

• Understand how numerical representations measure heat transfer in different thermal processes.
• Learn about units of energy and temperature scales used in thermal calculations.
• Apply specific heat, mass, and temperature change to calculate energy transfer in Joules and kilojoules.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Identify different sources of freshwater such as lakes and aquifers.
• Describe how groundwater systems operate and recharge.
• Explain the importance of porosity and permeability in aquifer function.+ Show more

Learning Objectives

• Define morphological adaptations as physical traits that improve survival and reproduction.
• Identify how camouflage and body structures help organisms in specific habitats.
• Distinguish adaptation from change caused only by immediate conditions (acclimation).+ Show more

Learning Objectives

• Explain how the geosphere, hydrosphere, atmosphere, and biosphere exchange matter and energy
• Describe cause-and-effect relationships between Earth systems (e.g., erosion affecting waterways and habitats)
• Use evidence from observations to support an explanation of Earth system interactions over time

Learning Objectives

• Identify examples of the six simple machines and describe how each one changes force magnitude or direction
• Explain mechanical advantage as a comparison of output force to input force, using appropriate units and reasoning
• Apply relationships among force, distance, and machine geometry to predict outcomes for everyday tools

Learning Objectives

• Explain how design criteria for success can be measurable or observable in a science design problem.
• Identify common constraints (time, materials, cost, safety) and describe how they affect possible solutions.
• Describe trade-offs and improvement by connecting test evidence to criteria rather than appearance.+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks form in the rock cycle.
• Describe the roles of heat, pressure, weathering, and mineral cementation in rock transformations.
• Use rock-cycle ideas to make connections between surface and subsurface Earth processes.

Learning Objectives

• Understand key concepts of designing fair and reproducible experiments.
• Identify variables, operational definitions, and control conditions in experiments.
• Recognize ethical, safety, and sample size considerations in research design.+ Show more

Learning Objectives

• Explain how heat transfers from warmer regions to cooler regions using conduction, convection, and radiation models.
• Use a simple heat-transfer model to predict the direction of energy flow based on temperature differences.
• Describe how energy can change form while heat moves through a system.

Learning Objectives

• Describe how carrying capacity limits population growth using logistic models.
• Differentiate exponential growth from logistic growth on population graphs.
• Identify limiting factors and explain how density-dependent and density-independent effects differ.+ Show more

Learning Objectives

• Explain how cells convert chemical energy in food into usable energy for life processes
• Describe how ATP functions as an energy carrier within cells
• Connect energy transformations to the idea that matter is conserved during cellular reactions

Learning Objectives

• Identify how evidence supports scientific claims.
• Understand the importance of linking data to reasoning.
• Recognize the role of scientific principles in arguments.+ Show more

Learning Objectives

• Explain how matter and energy move between Earth’s geosphere, hydrosphere, atmosphere, and biosphere.
• Describe how changes in one Earth system can trigger changes in another system.
• Use evidence from everyday examples (weather, erosion, water availability) to model Earth system interactions.

Learning Objectives

• Understand how material properties influence heat flow.
• Identify regional examples of insulation techniques in Alberta.
• Determine the significance of R-values and thermal bridges in building design.+ Show more

Learning Objectives

• Understand how mathematical models quantify trait frequencies, selection coefficients, and population dynamics.
• Interpret graphical displays of fitness differentials and allele frequency changes.
• Apply Hardy-Weinberg principles and rate calculations to analyze genetic data.+ Show more

Learning Objectives

• Distinguish independent, dependent, and controlled variables in a fair science investigation.
• Use operational definitions to define how variables are measured or identified during an experiment.
• Design fair tests using replication and controls to reduce confounding and sampling bias.