Grade 7 Science Worksheets

Learning Objectives

• Understand different prototyping approaches including scaled physical models, digital models, and laboratory rigs.
• Compare the advantages and limitations of various prototyping techniques for structural assessment.
• Learn about instrumentation methods like strain gauges and displacement transducers used in testing.+ Show more

Learning Objectives

• Classify mixtures as solutions, colloids, or suspensions based on particle size and observable behavior
• Distinguish homogeneous from heterogeneous mixtures using uniformity and visible phases
• Use evidence such as light scattering and stability to predict how mixtures behave during separation

Learning Objectives

• Understand how to compare different solutions based on specific criteria.
• Learn to justify design choices through observed outcomes and trade-offs.
• Recognize the importance of iterative refinement in engineering design.

Learning Objectives

• Explain what species richness and evenness mean and how they contribute to biodiversity
• Interpret common biodiversity index values when comparing habitats
• Describe how habitat heterogeneity and niche diversity can affect species turnover+ Show more

Learning Objectives

• Compare design alternatives using clear criteria and constraints.
• Justify a final design choice by linking each criterion to expected outcomes.
• Explain how tradeoffs and iterative refinement help keep constraints satisfied.+ Show more

Learning Objectives

• Understand the purpose and importance of schematic symbols and diagrams.
• Identify standardized units and labels used in technical drawings.
• Interpret various types of technical documents like circuit diagrams, blueprints, and datasheets.+ Show more

Learning Objectives

• Explain how heavy rainfall, runoff, and flooding can rapidly change Earth’s surface by eroding banks and depositing sediment
• Describe how storms, including coastal storms, reshape dunes and beaches
• Compare gradual processes (weathering, erosion, deposition) with sudden processes (earthquakes and volcanic activity)

Learning Objectives

• Understand the different types of energy changes in chemical reactions.
• Distinguish between exothermic and endothermic reactions based on energy transfer.
• Explain how bond breaking and formation relate to energy absorption and release.+ Show more

Learning Objectives

• Explain conservation of energy using the idea that energy is transferred and changes form but is not lost
• Identify evidence of energy transfer using temperature changes and changes in motion
• Use energy models to describe how friction can convert mechanical energy into thermal energy

Learning Objectives

• Explain how a lever changes force and direction of a push or pull using fulcrum placement and lever arms.
• Describe how pulley systems can increase mechanical advantage and change the direction of force.
• Calculate and compare input (effort) and output (load) forces using simple mechanical advantage relationships.

Learning Objectives

• Explain how evolutionary change involves shifts in heritable traits across generations rather than individual lifetime changes
• Use the ideas of variation, heredity, and differential survival/reproduction to describe population-level evolution
• Distinguish between adaptation within a lifetime and evolutionary change over long time scales

Learning Objectives

• Translate distance–time and speed–time data into motion graphs and interpret what the graph shows.
• Explain how slope relates to rate of change in motion graphs and how to find average speed from distance–time graphs.
• Use graphs to estimate instantaneous speed and to compare two motions using quantitative evidence.

Learning Objectives

• Define inherited traits and distinguish them from learned behaviors.
• Identify examples of traits passed from parents to offspring.
• Understand the genetic basis of traits such as fur color, seed shape, and blood type.+ Show more

Learning Objectives

• Explain how temperature changes create density differences that drive convection in fluids
• Differentiate natural convection from forced convection using real-world examples
• Identify key features of convection systems such as buoyancy and boundary layers+ Show more

Learning Objectives

• Explain how microscopy provides evidence that organisms are made of discrete cells.
• Differentiate unicellular and multicellular organization using examples such as protists and onion epidermis.
• Identify major cell boundaries (plasma membrane and cell wall) and describe how they appear in images.+ Show more

Learning Objectives

• Understand how to connect evidence to reasoning in scientific arguments.
• Identify specific data values, graph features, or direct observations that support claims.
• Evaluate the strength of scientific arguments, including addressing limitations and avoiding unsupported cause-and-effect claims.+ Show more

Learning Objectives

• Understand the concepts of static and kinetic friction and their effects on motion.
• Identify examples of friction and aerodynamic drag in real-world scenarios.
• Describe how surface texture and normal force influence the coefficient of friction.+ Show more

Learning Objectives

• Describe how abiotic factors such as temperature, moisture, light, soil nutrients, and pH influence species distributions.
• Explain how seasonal and daily fluctuations affect populations and ecosystems.
• Identify the impact of extreme environmental events on species survival and resilience.+ Show more

Learning Objectives

• Identify observable signs of chemical changes such as colour change, gas evolution, precipitate formation, temperature change, or odour alteration.
• Differentiate between physical and chemical changes at the particle level, focusing on bond reorganization and energy transfer.
• Understand real-world examples of chemical changes, including oxidation and combustion, and interpret their processes at the particle level.

Learning Objectives

• Explain what makes a pure substance different from a mixture in terms of uniform composition and characteristic properties.
• Differentiate elements and compounds and identify examples using chemical and physical evidence.
• Use fixed melting/boiling points and other properties to distinguish pure substances from substances with impurities.

Learning Objectives

• Explain how biodiversity supports ecosystem stability through overlapping ecological functions.
• Describe how disturbances such as habitat loss and invasive species can reduce biodiversity and weaken ecosystem processes.
• Use evidence from a passage to answer questions about nutrient cycling and ecosystem resilience.

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

• Explain how DNA sequences are organized into genes and how genes influence observable traits.
• Describe how chromosomes package many genes and how gametes receive chromosomes during meiosis.
• Use models of chromosome segregation and fertilization to predict how offspring inherit genetic material from both parents.

Learning Objectives

• Explain how sound wave behavior (amplitude, frequency, and spreading with distance) affects what we hear as loudness and pitch.
• Describe how reflection, echo formation, and absorption depend on the surfaces and materials sound waves encounter.
• Connect physical sound wave properties to the brain’s interpretation of sound perception.

Learning Objectives

• Identify a claim and the specific data or observation used as evidence.
• Explain how evidence supports a claim using correct relationships and units.
• Compare alternative explanations and choose which is supported more strongly by the evidence.+ Show more

Learning Objectives

• Understand the concept of fair tests in scientific experiments.
• Identify variables that influence experimental fairness.
• Learn to use appropriate measurement tools and units.+ Show more

Learning Objectives

• Distinguish biotic factors from abiotic factors in an ecosystem.
• Explain cause-and-effect relationships between abiotic conditions and resource access, shelter, and survival for organisms.
• Describe how gradients in abiotic factors can shape patterns in plant, animal, and microbe communities.

Learning Objectives

• Describe the difference between mixtures and pure substances.
• Identify characteristics of heterogeneous and homogeneous mixtures.
• Understand separation methods based on physical properties.+ Show more

Learning Objectives

• Explain how energy drives changes between igneous, sedimentary, and metamorphic rocks in the rock cycle
• Describe key processes in the rock cycle, including melting, crystallization, weathering, deposition, burial, and metamorphism
• Trace how Earth materials move through the cycle using a pathway from magma to rocks and back again

Learning Objectives

• Understand the basic atmospheric and oceanic cells involved in global circulation
• Identify the locations and characteristics of Hadley, Ferrel, and Polar cells
• Describe the role of jet streams and ocean gyres in climate regulation+ Show more

Learning Objectives

• Understand how technology affects society and the environment through benefits and costs.
• Identify ethical considerations related to technology, including fairness, privacy, and responsibility.
• Analyze trade-offs involved in technological development and use.+ Show more

Learning Objectives

• Explain how heritable variation and environmental pressures lead to natural selection.
• Describe how differential survival and reproduction change trait frequencies over generations.
• Use examples (such as antibiotic resistance or island finches) to connect adaptation to selective pressures.

Learning Objectives

• Describe production pathways from natural resources to common synthetic materials, including feedstocks, polymerization, and refining steps.
• Identify examples of synthetic materials such as polyethylene, PET, and nylon, and understand their manufacturing processes.
• Analyze trade-offs related to durability, recyclability, and environmental impacts of different synthetic materials.+ Show more

Learning Objectives

• Explain how insulation reduces conduction, convection, and radiation
• Compare insulating materials using thermal resistance and thickness
• Identify thermal bridges and explain their effect on heat loss+ Show more

Learning Objectives

• Explain how density relates mass to volume using the idea of density = mass ÷ volume
• Classify density as an intensive property and justify why it does not depend on the amount of material
• Use density ideas to predict sinking and floating and to distinguish materials with similar shapes

Learning Objectives

• Understand the structure and role of the nucleus in a cell.
• Identify key features such as nuclear envelope, nuclear pores, and chromosomes.
• Explain how the nucleus controls growth, development, and protein synthesis.+ Show more

Learning Objectives

• Explain how resource availability sets limits on population size using carrying capacity.
• Interpret logistic growth ideas by connecting population growth rate to birth, death, immigration, and emigration.
• Use graphs and quantitative reasoning to predict how limiting factors change population trajectories.

Learning Objectives

• Describe common forms of energy and how they change in everyday systems
• Explain energy transformations while conserving total energy
• Identify where energy appears as mechanical, electrical, chemical, and thermal energy in a real-world example

Learning Objectives

• Explain how data integrity, attribution, and intellectual property shape ethical communication in STEM
• Use conventions for technical reporting, including clear methods descriptions and accurate graphical annotation
• Describe how peer review and responsible data sharing improve reliability and public understanding of scientific findings+ Show more

Learning Objectives

• Analyze societal, economic, and environmental impacts of various technologies.
• Evaluate short-term and long-term consequences of technological development.
• Assess ethical considerations and policy responses related to technology.+ Show more

Learning Objectives

• Understand how carbon atoms move through organisms and the environment
• Describe the processes of digestion, biosynthesis, and respiration that involve matter transformation
• Explain how matter is conserved and recycled within ecosystems+ Show more

Learning Objectives

• Describe quantitative relationships in chemical transformations using balanced symbolic equations and ratio reasoning.
• Perform mole-ratio calculations to determine relative mass relations among reactants and products.
• Apply conservation principles in proportional calculations to predict reagent needs and product yields.+ Show more

Learning Objectives

• Explain the concept of saturation and supersaturation in solutions.
• Identify real-world examples of saturation and supersaturation.
• Describe the conditions that lead to crystallization and phase change.+ Show more

Learning Objectives

• Describe how variations in solar heating influence regional climate patterns.
• Explain the role of ocean currents and topography in modifying local climates.
• Identify key phenomena such as El Niño, monsoon regimes, and prevailing wind belts.+ Show more

Learning Objectives

• Understand the concept of gravitational potential energy
• Identify factors that affect potential energy such as height and mass
• Recognize different models representing potential energy in physical systems+ Show more

Learning Objectives

• Understand the concept of optimization in engineering contexts
• Identify various criteria used for optimization tasks
• Analyze how different optimization goals influence design decisions+ 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

• Explain the law of conservation of mass using particle-level reasoning (atoms rearrange but are not created or destroyed).
• Use the idea of a closed system to predict whether total mass will stay the same before and after a chemical reaction.
• Identify reactants and products at the particle level and describe what happens to bonds during a reaction.