Grade 8 Science Worksheets

Learning Objectives

• Describe the major components of the solar system, including the Sun, planets, dwarf planets, moons, asteroids, and comets.
• Compare planetary compositions and atmospheres across Earth, Mars, Jupiter, and other solar system bodies.
• Explain how gravity and orbital motion work using examples from the solar system.+ Show more

Learning Objectives

• Identify evidence that helps classify rocks as igneous, sedimentary, or metamorphic.
• Connect rock features to the processes in the rock cycle.
• Use mineral and texture clues to support a classification claim.

Learning Objectives

• Identify the main idea of a passage about Earth’s resources.
• Explain key vocabulary related to renewable and nonrenewable resources.
• Use evidence from the text to answer comprehension questions.

Learning Objectives

• Describe how faults form and how stress builds in rocks before an earthquake.
• Explain what happens when stored stress is released as sudden slip.
• Identify key ideas about faults and earthquake preparation concepts from the reading.

Learning Objectives

• Identify the main idea of plate tectonics and support it with key details from a passage.
• Describe how plate boundaries relate to features such as ridges, trenches, and volcanoes.
• Explain how Earth’s internal heat drives mantle movement and long-term crust recycling.

Learning Objectives

• Explain how weather differs from climate using key details.
• Identify how air pressure, temperature, and humidity help create short-term weather changes.
• Use vocabulary from the passage to answer questions about fronts and precipitation.

Learning Objectives

• Recognize and identify trends, patterns, and relationships within data sets.
• Explain how to interpret data variability and consider outliers.
• Differentiate between correlation and causation in scientific data.+ Show more

Learning Objectives

• Understand the concept of power as the rate of doing work in mechanical systems.
• Learn the SI unit of power, the watt, and how it applies to measuring system performance.
• Interpret motor specifications in terms of torque, rotational speed, and output power.+ Show more

Learning Objectives

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

Learning Objectives

• Explain how dominant and recessive alleles influence observable traits.
• Use Punnett squares to predict genotypic and phenotypic ratios.
• Describe the segregation of alleles during gamete formation.+ Show more

Learning Objectives

• Explain how particle motion relates to states of matter and phase changes.
• Describe how temperature and energy transfer influence phase changes such as melting, boiling, and condensation.
• Relate macroscopic measurements of temperature and heat flow to microscopic particle behavior.+ Show more

Learning Objectives

• Explain how a spring’s restoring force changes when it is stretched or compressed
• Identify the direction of the restorative force in relation to the spring’s deformation
• Describe the proportional (linear) relationship between force and displacement within the elastic limit+ Show more

Learning Objectives

• Explain the concept of water potential and how it influences water movement in and out of cells
• Describe the effects of different environments (hypotonic, isotonic, hypertonic) on plant and animal cells
• Identify mechanisms cells use to maintain osmotic balance, including cellular adaptations and responses+ Show more

Learning Objectives

• Explain how quantitative measurements and qualitative observations can provide evidence for or against a design choice.
• Describe how testing criteria guide what counts as acceptable results.
• Use evidence from repeated trials to evaluate whether outcomes are likely due to chance.+ Show more

Learning Objectives

• Understand the principles of conduction, convection, and radiation in heat transfer.
• Identify strategies for minimizing or maximizing thermal energy transfer in systems.
• Explain how material properties and system geometry influence heat flow.+ Show more

Learning Objectives

• Explain what it means for a process to be a closed system and identify what does or does not exchange with the surroundings.
• Use conservation of mass ideas to predict relationships between reactants and products in a contained chemical change.
• Interpret examples of gas changes and mass changes when matter exchange is prevented.

Learning Objectives

• Identify evidence in a text that describes a solid’s property
• Explain how particle spacing and packing help solids keep a fixed shape
• Use particle models to distinguish solids from other states of matter

Learning Objectives

• Explain how tissue structure supports organ function in the circulatory, respiratory, and digestive systems.
• Describe how surface area and transport mechanisms affect efficiency of gas exchange and nutrient absorption.
• Connect epithelial interfaces and blood movement to maintaining homeostasis.

Learning Objectives

• Understand how force, motion, and energy interact in mechanical systems.
• Analyze the movement and efficiency of bicycles under various forces.
• Evaluate the effect of friction, material limits, and energy transfer on system performance.+ Show more

Learning Objectives

• Understand how climate change influences precipitation patterns, including rainfall and snowfall.
• Analyze the effects of changing precipitation on water resources such as groundwater recharge and reservoir storage.
• Evaluate the interaction between climate variability and land-use change.+ Show more

Learning Objectives

• Explain how fluid mechanics principles apply to blood transport in the circulatory system.
• Describe how viscosity, vessel diameter, and pressure gradients influence flow rates and resistance.
• Identify the effects of non-Newtonian blood properties on perfusion.+ Show more

Learning Objectives

• Identify different types of chemical reactions based on atom rearrangement patterns.
• Describe characteristic features of synthesis, decomposition, single and double displacement, and combustion reactions.
• Predict products of various reaction types occurring in chemical processes.+ Show more

Learning Objectives

• Explain how scientific models represent systems that are too small, too large, or too complex to observe directly.
• Describe how models help predict outcomes and organize information using evidence.
• Evaluate the usefulness of a model based on how well it fits data and how it is revised when new evidence appears.

Learning Objectives

• Understand the concept of limiting factors and their impact on populations.
• Identify examples of resource limitations such as food, water, and shelter.
• Analyze how limiting factors influence population size and stability.+ Show more

Learning Objectives

• Explain how forces combine to produce a net force and determine its direction.
• Relate nonzero net force to changes in velocity (speed and/or direction).
• Use simple force diagrams or subtraction of opposing forces to predict acceleration.

Learning Objectives

• Differentiate kinetic energy and gravitational potential energy and describe how they change in a mechanical system.
• Use energy concepts to predict motion outcomes from initial conditions in everyday scenarios.
• Recognize thermal and acoustic energy as common energy sinks in real systems.

Learning Objectives

• Explain how genetic divergence and reproductive isolation can lead to speciation.
• Describe allopatric speciation and adaptive radiation, including the role of geographic and environmental isolation.
• Connect variation, isolation, selection pressures, and lineage termination to evidence from fossils and genetics.

Learning Objectives

• Explain how mechanical energy can be dissipated into less useful forms such as thermal energy due to friction, inelastic deformation, and air resistance.
• Describe how energy efficiency relates input energy to useful output energy in mechanical systems.
• Identify real-world examples of energy dissipation and predict how they affect motion and efficiency.+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in an experiment design.
• Select measurable data-collection outcomes that match the research question.
• Use control variables to reduce confounding and improve fairness when comparing groups.+ Show more

Learning Objectives

• Define and describe linear momentum and impulse in simple interactions.
• Differentiate between elastic and inelastic collisions.
• Understand the conservation of momentum in closed systems.+ Show more

Learning Objectives

• Explain how shifts in precipitation, temperature, and snowpack affect runoff timing and streamflow.
• Describe how changes in evapotranspiration can increase drought risk even when precipitation totals vary.
• Evaluate how climate variability and land-use change can affect flood frequency, groundwater recharge, and reservoir storage.

Learning Objectives

• Understand the process of scientific inquiry using observations and questions.
• Differentiate between evidence-based explanations and opinions.
• Recognize the importance of recording observations carefully.+ Show more

Learning Objectives

• Explain how hydrostatic pressure changes with depth and fluid density using p = ρgh
• Describe how hydrostatic pressure differences drive forces in liquids at rest
• Connect hydrostatic pressure to real systems like communicating vessels and dams

Learning Objectives

• Define the levels of cellular organization in multicellular organisms.
• Explain how similar cells combine to form tissues, and how tissues form organs.
• Describe how organ systems work together to sustain life.+ Show more

Learning Objectives

• Explain how invasive (non-native) species can disrupt native biodiversity and ecosystem balance
• Describe how invasive species can change energy pathways and nutrient cycles within food webs
• Identify pathways that allow invasive species to spread and predict ecosystem-level consequences+ Show more

Learning Objectives

• Explain how predator–prey interactions affect population size and behavior over time
• Describe how refuges and compensatory mechanisms can reduce or change predator impacts
• Use functional response ideas to predict how predator consumption can change with prey density+ Show more

Learning Objectives

• Explain how a claim, evidence, and reasoning work together in CER argumentation.
• Use appropriate scientific evidence (measurements, trends, comparisons) to support a claim.
• Write reasoning that connects evidence to a claim using scientific principles and clear cause logic.+ Show more

Learning Objectives

• Explain how potential (stored) energy depends on the arrangement of objects that interact at a distance.
• Compare gravitational, elastic, and magnetic potential energy in terms of what changes in position affect the energy.
• Use configuration variables to reason about how much energy can be converted when a system changes.

Learning Objectives

• Understand how gravity governs planetary and galactic motions in the solar system.
• Explain the concepts of mutual gravitational attraction, centripetal acceleration, and orbital paths.
• Describe how inertia and gravity interact to produce elliptical orbits and orbital periods.+ Show more

Learning Objectives

• Explain how predation, competition, mutualism, and parasitism affect individual survival and reproduction
• Connect species interactions to changes in population size over time
• Use evidence from interactions to predict how community structure can shift when the environment changes

Learning Objectives

• Trace energy flow through gears, pulleys, and hydraulic components
• Identify energy conversion points and mechanical energy losses
• Calculate net useful energy using input energy and efficiency+ Show more

Learning Objectives

• Understand the key processes involved in nutrient cycling within ecosystems.
• Identify the roles of decomposers, nitrogen fixation, and mineralization.
• Learn how environmental factors such as temperature and moisture influence nutrient cycling rates.+ Show more

Learning Objectives

• Identify common scientific measurement tools
• Understand the importance of accuracy and precision
• Learn how calibration affects measurements+ Show more

Learning Objectives

• Interpret long-term climate trends by comparing average values and extreme events over time.
• Use data from temperature, precipitation, and storm-frequency records to make evidence-based claims.
• Explain how climate indicators and ocean-atmosphere phenomena (El Niño and La Niña) can change rainfall and temperatures.

Learning Objectives

• Understand geological processes that lead to mineral, energy, and groundwater resource formation
• Analyze how geological phenomena like plate tectonics, sedimentation, and metamorphism contribute to resource deposits
• Explore different types of groundwater aquifers and their significance for resource accessibility+ Show more

Learning Objectives

• Understand the components of biodiversity at genetic, species, and ecosystem levels.
• Evaluate restoration strategies and their trade-offs in conservation.
• Analyze ecosystem services and factors influencing conservation outcomes.+ Show more

Learning Objectives

• Identify key components of an experimental design, including hypotheses, variables, and controls.
• Evaluate systematic procedures to ensure reproducibility and reliability of experimental results.
• Differentiate between independent, dependent, and controlled variables in experiments.+ Show more

Learning Objectives

• Understand how abiotic and biotic factors influence population size and distribution.
• Identify examples of population changes in Alberta ecosystems.
• Explain the roles of birth, death, immigration, and emigration in population dynamics.+ Show more