Grade 7 Science Worksheets

Learning Objectives

• Explain how living organisms function as interconnected systems with specialized structures
• Describe how body systems process inputs (food, oxygen, water) into forms cells can use
• Use cause-and-effect reasoning to connect structure function to organism survival+ Show more

Learning Objectives

• Explain how natural processes and human use affect the availability of land, water, and air resources.
• Describe how precipitation patterns and groundwater storage influence access to freshwater.
• Evaluate how droughts, floods, and human demand can change ecosystem stress and resource availability.

Learning Objectives

• Explain how sound waves affect perceived loudness and pitch as they travel through space
• Describe how reflection and absorption by materials change the intensity of sound
• Connect frequency and amplitude to pitch and volume

Learning Objectives

• Explain how reliability and variability affect the confidence of scientific conclusions.
• Identify common sources of measurement and interpretation error in experimental data.
• Use patterns in repeated measurements to decide whether evidence supports design changes.

Learning Objectives

• Understand the factors that drive seasonal and annual animal migration.
• Identify examples of migration routes and their ecological importance.
• Explain how migration connects ecosystems across regions.+ Show more

Learning Objectives

• Explain how torque depends on force and lever arm distance
• Identify how moving the fulcrum changes which direction and size of force is produced
• Use simple arithmetic to relate input force to output force in lever situations

Learning Objectives

• Understand how cells communicate through chemical and electrical signals.
• Identify the role of receptor proteins, gap junctions, and plasmodesmata in cell communication.
• Explain the importance of signal specificity, amplification, and feedback in biological processes.

Learning Objectives

• Describe different reaction types such as synthesis, decomposition, single and double displacement, acid–base neutralization, and combustion.
• Explain how bonds are broken and formed during reaction types at the particle level.
• Identify reaction types based on chemical equations and particle explanations.+ Show more

Learning Objectives

• Understand how natural processes and human activities affect Earth's land, water, and air resources.
• Identify factors that influence resource availability, such as precipitation, geological storage, and ecosystem capacity.
• Analyze how natural events like droughts and floods impact resource access.+ Show more

Learning Objectives

• Explain how energy moves through trophic levels from primary producers to higher consumers
• Use quantitative ideas like trophic efficiency (e.g., ~10%) to predict how much energy is available at higher levels
• Describe how respiration and heat conversion limit energy availability and shape biomass pyramids+ Show more

Learning Objectives

• Identify criteria for strong scientific questions and use them to form testable hypotheses.
• Explain how operational definitions, variables, and reproducibility improve the reliability of results.
• Apply measurement precision and clear documentation practices to support valid comparisons across trials.+ Show more

Learning Objectives

• Explain what chemical properties are and how they help predict reactions.
• Identify observable evidence (gas, color change, heat) that indicates chemical changes.
• Describe how flammability, reactivity with acids or bases, oxidation, and pH behavior are chemical properties.

Learning Objectives

• Understand how traits vary within animal populations
• Identify examples of traits such as body size, coloration, and disease resistance
• Learn about the sources of variation including inheritance and recombination+ Show more

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

• Explain how different biotic interactions (predation, competition, mutualism, commensalism, and parasitism) affect survival and reproduction.
• Describe how changes to one species can spread through a community and alter biodiversity.
• Predict how human actions (habitat alteration, overharvesting, and species introductions) may disrupt ecological relationships.

Learning Objectives

• Explain how energy transfers from higher-energy systems to lower-energy systems
• Identify common forms of energy involved in energy transfer (heat, light, motion, sound)
• Describe energy transformations and how they relate to observable changes (temperature, motion, light)

Learning Objectives

• Explain how food availability and breeding needs can drive migration patterns.
• Identify timing cues and energetic demands that influence when animals migrate.
• Describe how migratory connectivity links ecosystems across habitats and provinces.

Learning Objectives

• Understand the different types of population interactions: competition, predation, and mutualism.
• Identify how resource use and niche partitioning influence community stability.
• Explain mechanisms that allow species to coexist and how interactions affect biodiversity.+ Show more

Learning Objectives

• Explain how waves transfer energy without permanently moving matter.
• Differentiate transverse and longitudinal waves using particle motion and wave patterns.
• Relate amplitude and wavelength to the energy and spacing of a wave pattern.

Learning Objectives

• Understand the concept of astronomical units, planetary diameters, and light-years used to express cosmic distances and sizes.
• Interpret scaled diagrams and logarithmic representations illustrating the separation between celestial objects.
• Analyze orders of magnitude differences to comprehend how scale affects observation and measurement in astronomy.+ Show more

Learning Objectives

• Understand different types of representations used to convey matter interactions, including chemical equations, graphs, and data tables.
• Interpret and analyze various representations such as reaction rate graphs, stoichiometric ratios, and phase diagrams.
• Select appropriate representations for quantitative comparison and communicate relationships among measurable variables.+ Show more

Learning Objectives

• Explain how the manufacturing process and microstructure of advanced materials influence strength, stiffness, and durability
• Compare advanced construction materials by considering cost, fabrication complexity, and performance trade-offs
• Describe how prefabrication and connections enable tall timber buildings and bridge retrofits using novel materials

Learning Objectives

• Explain the meaning of accuracy, precision, and measurement uncertainty using examples from real instruments.
• Read instrument scales and apply significant-figure and rounding conventions when reporting measurements.
• Distinguish between systematic error and random error and identify common sources of each.+ Show more

Learning Objectives

• Describe how pressure, volume, and temperature of gases interrelate qualitatively.
• Explain phenomena such as diffusion and compressibility in gases.
• Relate macroscopic observations to basic gas principles without involving formal gas law derivations.+ Show more

Learning Objectives

• Understand how resource availability influences population growth and stability.
• Analyze graphical data representing population responses to environmental constraints.
• Interpret quantitative data sets related to ecosystem resource limits.+ Show more

Learning Objectives

• Describe how carbon cycles between air, organisms, and soils.
• Explain the roles of bacteria in the nitrogen cycle.
• Trace how phosphorus moves through water, soil, and organisms.+ Show more

Learning Objectives

• Understand the properties and applications of engineered timber in modern construction
• Identify different advanced construction materials such as fibre-reinforced polymers and high-performance concrete
• Explain how manufacturing processes and microstructure influence the strength, stiffness, and durability of materials+ Show more

Learning Objectives

• Understand how cells convert food molecules into usable energy.
• Identify internal processes involved in cellular energy transfer.
• Explain the conservation of matter during energy transformation in cells.+ Show more

Learning Objectives

• Identify cause-and-effect impacts of a technology in a real-world system.
• Explain how transportation technology can create both benefits and unintended consequences.
• Suggest a mitigation strategy to reduce an identified negative impact.

Learning Objectives

• Classify matter as a pure substance (element or compound), a mixture, or a solution based on composition and uniformity.
• Describe how measurable properties (like melting point) help distinguish pure substances from mixtures.
• Explain, with particle ideas, why solutions are homogeneous while mixtures can be separated by physical methods.+ Show more

Learning Objectives

• Explain how DNA is organized into genes and chromosomes
• Describe chromosome segregation during gamete formation
• Predict genetic inheritance using models of meiosis and fertilization+ Show more

Learning Objectives

• Explain how energy transfer causes phase changes between solid, liquid, and gas
• Identify examples of melting, freezing, vaporization, condensation, sublimation, and deposition
• Use particle motion and arrangement to describe temperature and pressure effects on phases+ Show more

Learning Objectives

• Explain how greenhouse gases alter Earth's energy balance over time
• Analyze temperature and CO2 records for trends and variability
• Predict climate impacts on agriculture, communities, and infrastructure+ Show more

Learning Objectives

• Explain how plate tectonics affects mineral and energy resource distribution
• Describe how weathering and sedimentation shape resource locations
• Explain how fossils reveal past environments linked to resource deposits+ Show more

Learning Objectives

• Understand how the circulatory system transports nutrients and gases.
• Identify the different organ systems involved in maintaining homeostasis.
• Explain the cooperation between the lungs, heart, and blood in gas exchange.+ Show more

Learning Objectives

• Understand the various analytical indicators used to assess the purity of a substance.
• Identify methods like melting point, boiling point shifts, conductivity, refractive index, and gravimetric residue.
• Compare and interpret results from different purity assessment techniques.+ Show more

Learning Objectives

• Calculate energy transfer using specific heat, mass, and temperature change
• Convert between Joules and kilojoules and use units correctly
• Interpret simple thermal process situations and represent energy change numerically or in graphs+ Show more

Learning Objectives

• Explain how common structural failure modes (buckling, fatigue, shear/bending fracture, and connection/foundation failure) relate to geometry, material, and loading.
• Describe the limit states design philosophy and how safety factors reduce the risk of structural failure.
• Use redundancy and proper detailing to reduce the chance of progressive collapse.

Learning Objectives

• Explain how bolted, welded, and bearing connections help create continuous load paths in structures.
• Describe how shear, bearing, and slip can affect connection performance and structural capacity.
• Use truss-node and column-to-footing examples to predict how connection stiffness and detailing influence failure modes.

Learning Objectives

• Understand the concept of surface area and its importance in cell size and function.
• Explain how surface-area-to-volume ratio limits cell size.
• Identify adaptations that increase exchange surfaces in cells and organisms.+ Show more

Learning Objectives

• Understand the principles of ecological restoration
• Identify different approaches in habitat restoration
• Recognize key factors in successful restoration projects+ Show more

Learning Objectives

• Explain Newton’s third law using the idea of equal and opposite force pairs between two interacting objects
• Distinguish between the action-reaction forces on different objects and relate them to motion using mass and acceleration
• Apply action-reaction reasoning to both contact forces and noncontact forces such as gravity

Learning Objectives

• Explain how light energy is converted into chemical energy during photosynthesis.
• Describe how cells harvest energy from food through cellular respiration.
• Connect the processes of chloroplast-based sugar production to mitochondrial ATP generation.+ Show more

Learning Objectives

• Explain the manufacturing processes and microstructures that give advanced construction materials their enhanced strength, stiffness, and durability.
• Identify the trade-offs between cost, fabrication complexity, and performance in using novel materials.
• Discuss the roles of prefabrication and connections in applying advanced materials to tall timber buildings and bridge retrofits.

Learning Objectives

• Explain how predator and prey populations influence each other.
• Identify cause-and-effect relationships in ecological systems.
• Analyze cycles in predator-prey dynamics.+ Show more

Learning Objectives

• Explain how test data can reveal a mismatch between a design and the criteria for success.
• Describe how specific design changes can improve performance while meeting safety, materials, and cost constraints.
• Use evidence-based reasoning to justify revisions and predict how a new version may perform.

Learning Objectives

• Describe matter as made of discrete particles with spaces and motion
• Use the particle model to explain diffusion, compressibility, and density changes
• Relate particle kinetic energy and particle spacing to the properties of solids, liquids, and gases+ Show more

Learning Objectives

• Define a food web and identify its key components.
• Explain the flow of energy among organisms in an ecosystem.
• Distinguish between producers, consumers, and decomposers.+ Show more