Grade 4 Science Worksheets

Learning Objectives

• Explain why scientists use models to represent objects, systems, or processes that are hard to observe directly.
• Describe how models use simplified parts, patterns, or scale representations to connect evidence to explanations.
• Identify how assumptions in a model can be tested and revised using new observations.

Learning Objectives

• Compare life-cycle stages in different organisms by using observable features.
• Distinguish complete metamorphosis from gradual development using stage changes.
• Explain how each life-cycle stage meets different survival needs such as movement, food, and body covering.+ Show more

Learning Objectives

• Explain how scientific principles (force, friction, gravity, electricity, and material properties) connect to engineering design choices.
• Use observations from prototypes to decide how to improve a design.
• Identify how a complete electrical path and material selection affect whether a device works correctly.

Learning Objectives

• Identify claims, evidence, and reasoning in scientific examples.
• Choose evidence that best supports a scientific claim.
• Explain how reasoning connects evidence to a claim.+ Show more

Learning Objectives

• Identify a problem and describe what success should look like using measurable criteria.
• List constraints that limit a solution, such as size, materials, and cost.
• Explain how success criteria and constraints help choose an achievable goal.

Learning Objectives

• Explain how map and image features help readers understand Earth’s surface.
• Identify the purpose of a surface map using title, scale, and key symbols.
• Use map information to describe patterns on land and water.

Learning Objectives

• Explain how vision helps animals move safely.
• Identify details from a text about senses and responses.
• Use evidence from a passage to answer questions about cause and effect.

Learning Objectives

• Identify the main idea of a science passage about wave-based information transfer.
• Describe key details about how patterns in waves can carry messages.
• Use vocabulary related to waves, signals, and decoding to answer questions.

Learning Objectives

• Identify criteria and constraints for comparing solutions.
• Explain why comparisons should be fair and measurable.
• Use one criterion and one constraint to judge a design idea.

Learning Objectives

• Identify the control, independent variable, and dependent variable in a fair test plan.
• Choose a measurement that can be recorded quantitatively in an investigation.
• Explain how test results help refine a design using only one changing variable.

Learning Objectives

• Identify the main idea and key details about how waves interact with barriers.
• Describe how reflection changes a wave’s direction and how that affects what we observe.

Learning Objectives

• Identify the main idea and key details about rock layers (strata).
• Explain how fossil evidence and layer order help scientists infer past environments.

Learning Objectives

• Identify plant root and stem structures and describe what they help the plant do.
• Explain how structure supports function in plant life.
• Use key details from a short passage to answer questions.

Learning Objectives

• Find evidence in a text about how running water changes landforms.
• Explain how erosion and deposition shape river valleys.
• Use details from a passage to support a short claim.

Learning Objectives

• Identify input and output energy forms in a battery.
• Explain how a battery converts chemical energy into electrical energy.
• Describe energy losses during energy conversion as heat.

Learning Objectives

• Explain how collisions transfer energy and change motion.
• Use evidence to describe cause and effect in an energy transfer story.
• Connect changes in speed or direction to the way energy moves between objects.

Learning Objectives

• Identify key ideas about how humans get energy from natural resources.
• Explain how different energy sources connect to the environment.
• Use evidence from a passage to answer science questions.

Learning Objectives

• Identify thermal energy and describe how heat moves between materials.
• Use evidence from a text to explain observable effects of heat transfer.
• Distinguish between direct contact heating and heating from a distance.

Learning Objectives

• Define the parts of a wave: crest, trough, and displacement
• Explain what wavelength and amplitude mean using a model
• Identify wave patterns described by position and displacement

Learning Objectives

• Describe how light interacts with transparent, translucent, and opaque materials
• Explain how surface and bulk properties affect colour, brightness, and heating
• Use optical behaviour to interpret everyday examples such as filters, pigments, clouds, and haze

Learning Objectives

• Explain how soil forms from weathering of parent rock and the buildup of organic matter over time
• Describe how different horizons can form with distinct color, texture, and fertility
• Connect climate, slope, and drainage to how quickly soil develops and how deep it becomes

Learning Objectives

• Explain how gears, pulleys, levers, and linkages can work together to create a desired output motion or force.
• Describe trade-offs in combined mechanisms, such as torque versus speed and simplicity versus compactness.
• Use vocabulary such as torque, speed, linkage, and direction change to interpret simple real-world designs.

Learning Objectives

• Identify common simple machines (lever, inclined plane, wedge, screw, wheel-and-axle, and pulley) from everyday examples.
• Classify simple machines by how they change force: force multipliers, distance changers, and direction changers.
• Explain how input forces can be increased or redirected using simple machines.

Learning Objectives

• Explain how vibrating objects create sound by making matter move in repeating patterns
• Describe how frequency and amplitude affect pitch and loudness
• Identify common features of mechanical sound waves, including compressions and rarefactions+ Show more

Learning Objectives

• Describe how rock materials change among igneous, sedimentary, and metamorphic rocks in the rock cycle
• Explain key processes in the rock cycle, including melting and cooling, weathering and erosion, transport, compaction and cementation, and heat and pressure
• Use examples such as lava cooling to basalt and sediment forming sandstone to trace repeating pathways over geologic time

Learning Objectives

• Describe how smooth surfaces can produce specular reflection and clearer images in a plane mirror
• Explain the equal-angle relationship between incident and reflected rays
• Compare specular and diffuse reflection using brightness and clarity of images

Learning Objectives

• Explain how sound reflection can create echoes and reverberation in enclosed spaces
• Describe how distance to a reflecting surface affects the time delay between direct and reflected sound
• Compare how different surface materials absorb or reflect sound energy+ Show more

Learning Objectives

• Explain that pitch depends on frequency and that loudness depends on amplitude
• Identify how changes in vibrating strings and air columns can change pitch and loudness
• Use sound-source comparisons to predict which change makes a sound higher or lower, louder or softer

Learning Objectives

• Explain how a wheel-and-axle system turns rotational motion into linear motion or force
• Compare fixed and movable pulleys and describe how each changes the direction and size of input force
• Use wheel radius and axle radius to predict mechanical advantage in simple wheel-and-axle examples

Learning Objectives

• Use ray lines to predict where light is fully blocked and where light is present in shadows.
• Explain how extending rays helps locate regions of full illumination and darkness.
• Use incident and reflected ray directions to describe simple reflections on smooth surfaces.

Learning Objectives

• Identify the fulcrum, input arm, and output arm in common lever examples.
• Explain torque in simple terms using the idea of turning caused by force on an arm.
• Classify levers into first-, second-, and third-class levers by fulcrum position.+ Show more

Learning Objectives

• Explain how heat, pressure, and chemically active fluids change preexisting rocks into metamorphic rocks.
• Distinguish contact metamorphism from regional metamorphism using examples and where they occur.
• Describe how recrystallization, foliation, and mineral alignment show metamorphic change.+ Show more

Learning Objectives

• Identify sand, silt, clay, and loam using particle size distribution and basic properties.
• Describe how soil texture affects permeability, aeration, and nutrient retention.
• Explain how organic content can improve soil structure, fertility, and water-holding capacity.

Learning Objectives

• Explain how water depth, soil saturation, and flooding influence wetland plants and animals
• Describe how wetland plants have structural adaptations for life in low-oxygen, wet soils
• Differentiate marshes, swamps, and bogs using dominant vegetation and hydrology+ Show more

Learning Objectives

• Identify physical weathering agents and describe how they break rocks into smaller pieces.
• Describe chemical weathering processes such as oxidation and dissolution and their effects on rock.
• Explain how environmental conditions and rock type affect weathering rates and outcomes.

Learning Objectives

• Explain how wave speed depends on the medium for sound (solids, liquids, and gases).
• Describe how boundaries between media can cause partial reflection and reduced clarity.
• Identify how temperature and medium composition can change how sound travels and how quickly it fades.

Learning Objectives

• Explain how species richness and evenness help describe biodiversity in a community
• Identify how native and introduced species can change the make-up of a habitat
• Describe how habitat heterogeneity can support greater biodiversity

Learning Objectives

• Describe how energy moves through a food chain from producers to consumers and decomposers.
• Use arrows to show trophic relationships in a simple pond food chain and explain what each role does.
• Explain how a food web has multiple feeding connections and why removing one link can affect many species.

Learning Objectives

• Explain how protected areas, buffer zones, and habitat corridors help reduce harm to habitats and species.
• Distinguish passive protection from active restoration and creation of connected habitats.
• Describe how monitoring ecological indicators can show whether conservation efforts are working.

Learning Objectives

• Identify mutualism, commensalism, and parasitism using clues about who benefits
• Explain how symbiotic relationships can affect survival and reproduction in populations
• Use vocabulary to describe different species interactions in an ecosystem

Learning Objectives

• Explain the difference between primary and secondary succession after a disturbance.
• Describe how pioneer species and soil development change an ecosystem over generations.
• Predict how resource availability and species interactions shift as succession progresses.

Learning Objectives

• Understand the concept of a food chain and how energy flows from producers to consumers.
• Identify different roles in a food chain, such as producers, herbivores, carnivores, and decomposers.
• Recognize the components of a simple food chain and how each species depends on others.+ Show more

Learning Objectives

• Understand how water, ice, and wind cause erosion and deposition to shape landscapes.
• Describe different landforms created by erosion and deposition, such as valleys, deltas, and moraines.
• Explain processes like river incision, sediment transport, glacial carving, and coastal erosion.+ Show more

Learning Objectives

• Understand how friction, wear, and deformation reduce the efficiency of mechanisms.
• Distinguish between ideal and actual mechanical advantage.
• Identify factors such as material choices, lubrication, and surface finish that influence performance.+ Show more

Learning Objectives

• Understand how wave speed varies in different media such as solids, liquids, and gases.
• Identify how impedance mismatches affect sound transmission and reflection.
• Explain the effects of temperature and medium composition on sound propagation.+ Show more

Learning Objectives

• Explain the difference between single fixed pulleys and block-and-tackle systems.
• Describe how multiple pulleys affect mechanical advantage and rope distance.
• Identify and contrast four-bar linkages and crank-rocker systems as methods of motion transfer.+ Show more

Learning Objectives

• Understand the concept of species richness and relative abundance within communities.
• Distinguish between native and introduced species in an ecosystem.
• Explain how habitat heterogeneity influences biodiversity levels.+ Show more

Learning Objectives

• Describe how flowing water, wind, and ice can break down and move Earth materials.
• Explain how erosion changes landforms by removing material from one place and depositing it in another.
• Identify evidence of erosion, such as worn edges and exposed layers.+ Show more