Grade 8 Science Worksheets

Learning Objectives

• Distinguish chemical and physical changes using observable reaction evidence.
• Identify common evidence of chemical reactions such as gas formation, precipitate, temperature change, and color shift.
• Explain how atomic rearrangement leads to chemical changes and new substances.

Learning Objectives

• Understand the inverse-square law of gravity and how it affects planetary and satellite motion.
• Explain how mass and distance influence gravitational force and orbital characteristics.
• Apply concepts of gravitational fields to predict fall rates and orbital periods of objects.+ Show more

Learning Objectives

• Explain how green infrastructure practices manage stormwater by promoting infiltration, reducing runoff, and capturing sediment and nutrients.
• Identify how design choices (soil media, slope, vegetation, and storage volume) can affect outcomes like downstream peak flows and groundwater recharge.
• Differentiate among common green infrastructure tools such as permeable pavements, bioswales, rain gardens, vegetated buffers, and retention ponds.

Learning Objectives

• Understand how to perform tradeoff analysis among competing factors using multi-criteria decision methods.
• Apply tools such as weighted scoring and Pareto comparisons to evaluate potential solutions.
• Analyze project constraints, costs, benefits, risks, and lifecycle impacts for informed decision-making.+ Show more

Learning Objectives

• Explain how energy transfer affects particle motion during melting
• Describe the difference between solid and liquid at the particle level
• Predict whether melting is occurring based on energy changes

Learning Objectives

• Explain how limiting factors such as food, predation, disease, and weather affect population size over time
• Describe carrying capacity and how populations respond when resources are limited
• Use evidence from a text or scenario to identify the most likely limiting factor and its impact

Learning Objectives

• Understand how to prioritize among competing constraints using multi-criteria decision methods.
• Apply cost-benefit estimation and sensitivity analysis to project choices.
• Use selection tools such as weighted scoring and pareto comparisons to evaluate design options.+ Show more

Learning Objectives

• Describe how energy changes form within a system during common events (bouncing, motors, friction/heating).
• Identify the initial and final energy forms in examples of energy transformations.
• Explain how energy is conserved by tracking energy as it moves and changes form.

Learning Objectives

• Understand how models represent the structure and function of cellular processes.
• Identify key organelles involved in membrane transport, diffusion, and energy pathways.
• Explain the relationship between cell structure and overall cell viability.+ Show more

Learning Objectives

• Explain why energy transfer between trophic levels is inefficient using ideas of heat loss and incomplete digestion.
• Use typical ecosystem energy-efficiency ranges to describe how biomass changes from producers to top predators.
• Apply energy-efficiency concepts to real Alberta examples and predict effects on population size and species richness.

Learning Objectives

• Describe mechanisms of surface water and groundwater exchange
• Identify factors influencing water exchange rates
• Explain how seasonal changes affect water interactions+ Show more

Learning Objectives

• Understand the key components and boundaries involved in ecosystem models.
• Describe how biotic and abiotic factors interact in different ecosystems.
• Interpret flow diagrams and stock-and-flow representations to analyze ecosystem dynamics.+ Show more

Learning Objectives

• Explain how predator and prey populations affect one another through direct mortality and behavior changes.
• Describe how refuges and functional responses shape predator–prey interactions.
• Analyze cascading trophic effects when top predators are absent or return to an ecosystem.

Learning Objectives

• Write a testable hypothesis and connect it to an independent and dependent variable.
• Use operational definitions to make variables measurable and repeatable.
• Identify appropriate controls, replication, and measurement criteria in experimental procedures.

Learning Objectives

• Identify clear scientific claims from opinions.
• Distinguish between evidence types used in scientific arguments.
• Understand how reasoning connects evidence to claims.+ Show more

Learning Objectives

• Describe the hierarchical levels of cell organization in multicellular organisms.
• Explain the roles of tissues, organs, and organ systems in maintaining organismal functions.
• Understand how similar cells join to form tissues and how tissues work together in organs.+ Show more

Learning Objectives

• Explain the principle of mass conservation in a closed system during physical or chemical changes
• Use evidence from mass measurements to determine whether matter is escaping a system
• Apply mass conservation to interpret reactants, products, and mass budgets in real contexts+ Show more

Learning Objectives

• Explain how engineering models link inputs to expected outputs.
• Describe how comparing prototype measurements with model predictions leads to model adjustment and design refinement.
• Use evidence from testing to improve explanations of system behavior.

Learning Objectives

• Identify observable clues that suggest a chemical reaction happened.
• Differentiate chemical change evidence from physical change evidence.
• Use examples of reaction indicators such as color change, gas formation, precipitates, temperature shifts, and irreversible changes.

Learning Objectives

• Understand the importance of electrical grounding for safety
• Identify safety features used in electrical system design
• Recognize environmental impacts associated with electrical generation and infrastructure

Learning Objectives

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

Learning Objectives

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

Learning Objectives

• Identify a scientific claim and determine whether evidence supports it.
• Distinguish evidence that shows correlation from evidence that supports causation.
• Check for missing details that affect the quality of conclusions.

Learning Objectives

• Identify atoms and molecules using symbolic formulas.
• Understand the atomic composition of simple molecules like water and carbon dioxide.
• Recognize extended structures such as ionic lattices like sodium chloride.+ Show more

Learning Objectives

• Understand how engineering models predict system behavior and guide design refinement.
• Identify the process of adjusting models based on measurement discrepancies.
• Explain the role of testing evidence in refining engineering explanations.+ Show more

Learning Objectives

• Understand the role of models in representing components and interactions within systems.
• Identify examples of energy and matter transfer in ecological and physical systems.
• Explain the significance of conservation principles in systems modeling.+ Show more

Learning Objectives

• Explain how particle motion relates to gas pressure and temperature in a confined system.
• Describe how changes in temperature can cause expansion, compression, and changes in pressure.
• Use the idea of diffusion to predict how gases mix over time under different conditions.+ Show more

Learning Objectives

• Understand how the Moon influences tides on Earth.
• Explain the phases of the Moon and their causes.
• Identify the effects of the Moon's gravitational pull on Earth.+ Show more

Learning Objectives

• Explain how genetic variation is created during reproduction through new allele combinations.
• Describe how mutations can introduce new alleles and increase genetic variation.
• Connect genetic and trait variation to natural selection in changing environments.+ Show more

Learning Objectives

• Understand the concept of matter cycling between living organisms and the environment
• Identify key processes such as photosynthesis, respiration, and decomposition
• Trace the flow of atoms like carbon and water through ecosystems+ Show more

Learning Objectives

• Understand the processes driving microevolutionary change, including natural and artificial selection.
• Identify sources of genetic variation and interpret data such as trait distributions and lineage divergence.
• Evaluate evidence for evolution like fossil records and comparative anatomy.+ Show more

Learning Objectives

• Explain how matter cycles within and between ecosystems through living organisms and the physical environment.
• Describe the roles of evaporation, condensation, and precipitation in the water cycle.
• Trace how carbon and nitrogen move through air, water, soil, and living things.+ Show more

Learning Objectives

• Identify the components of physical systems
• Understand how forces are decomposed in complex systems
• Distinguish between internal and external forces+ Show more

Learning Objectives

• Understand what mutations are and how they affect DNA
• Identify different types of mutations
• Explain the role of mutations in evolution and diversity+ Show more

Learning Objectives

• Explain how magnification, resolution, and contrast help scientists see cells clearly.
• Compare light microscopy, stereomicroscopy, and electron imaging for cellular visualization.
• Identify common sample preparation artifacts and describe how they can mislead interpretation.+ Show more

Learning Objectives

• Explain the structure and function of food webs in terrestrial and aquatic ecosystems.
• Identify producers, consumers, decomposers, and their roles within trophic levels.
• Describe energy transfer, energy loss, and ecological efficiency in food chains.+ Show more

Learning Objectives

• Understand how pressure varies with depth on submerged surfaces.
• Calculate net force and center of pressure on planar and curved surfaces.
• Apply pressure concepts to dam faces and bulkhead structures.+ Show more

Learning Objectives

• Understand the concept of homeostasis and its importance.
• Identify key components involved in homeostatic mechanisms.
• Recognize how the body maintains stable internal conditions.

Learning Objectives

• Explain how genes and alleles contribute to inherited traits.
• Describe how offspring get combinations of alleles from each parent.
• Use evidence from a trait pattern to make predictions about possible inherited outcomes.

Learning Objectives

• Explain Earth's rotation and revolution and their effects on day and night.
• Describe how Earth's axial tilt and orbital motion cause seasons and variations in daylight.
• Understand how observable phenomena like sunrise, sunset, and constellations are related to Earth's motions.+ Show more

Learning Objectives

• Explain the three core ideas of cell theory and how they apply to living things
• Connect microscopy evidence (historical and modern) to each principle of cell theory
• Describe how cells arise from pre-existing cells and what that implies about cell division+ Show more

Learning Objectives

• Understand the concept of balanced and unbalanced forces
• Identify static equilibrium in real-world objects
• Analyze force vectors to determine net force+ Show more

Learning Objectives

• Understand the mechanisms of surface water and groundwater interactions, including baseflow contribution and hyporheic flow.
• Explain how permeability, hydraulic gradients, and recharge zones influence exchange rates.
• Describe the effects of river stage and seasonal variability on surface and groundwater exchange.+ Show more

Learning Objectives

• Compare plant and animal cells by identifying key structures and their functions
• Contrast prokaryotic and eukaryotic cell organization and explain how organization affects metabolism
• Explain how structural differences support ecological roles and physiological needs

Learning Objectives

• Understand the use of models in scientific testing and design.
• Identify different types of scientific models and their applications.
• Explain how model outputs guide improvements in design features.+ Show more

Learning Objectives

• Describe how energy enters and moves through ecosystems.
• Explain the concept of energy transfer and energy loss at each trophic level.
• Identify the roles of producers, consumers, and predators in energy flow.+ Show more

Learning Objectives

• Describe the different states of matter: solid, liquid, gas, and plasma.
• Explain the molecular motion and particle arrangement in each state of matter.
• Understand the energy changes involved in phase transitions such as melting, boiling, condensation, and sublimation.+ Show more

Learning Objectives

• Explain how collisions transfer and transform energy between objects.
• Distinguish elastic collisions from inelastic collisions in terms of kinetic and mechanical energy.
• Use momentum and energy ideas to predict what happens during collisions.