Grade 4 Science Worksheets

Learning Objectives

• Identify producers, primary consumers, secondary consumers, pollinators, predators and prey, and decomposers within a community.
• Describe how energy and matter move through community roles.
• Distinguish feeding modes and trophic functions using examples from plants, insects, and fungi.

Learning Objectives

• Describe minerals as naturally occurring, inorganic solids with characteristic chemical composition and crystal structure.
• Use observable properties such as hardness, cleavage, fracture, streak, lustre, and colour to identify minerals.
• Apply simple field tests to compare mineral properties, including a hardness test and a streak test.+ Show more

Learning Objectives

• Describe how igneous rocks form from magma or lava
• Compare intrusive and extrusive igneous bodies based on cooling rate and crystal size
• Use igneous texture and mineral content to infer a rock’s cooling history and setting+ Show more

Learning Objectives

• Identify physical and chemical weathering agents and describe their effects on rocks
• Explain how freeze-thaw, abrasion, and plant roots can break rocks into smaller pieces
• Describe how oxidation and dissolution can change rock minerals and help form soil+ Show more

Learning Objectives

• Identify the fulcrum, input arm, and output arm in a simple lever situation.
• Explain how input force and output force relate to arm lengths for each class of lever.
• Compare mechanical advantage and trade-offs in levers (force amplification vs. distance moved).+ Show more

Learning Objectives

• Explain how wave frequency relates to pitch and how wave amplitude relates to loudness.
• Describe how changing tension, length, mass per unit length, and air-column conditions can change frequency.
• Identify factors that affect how loud a sound is, such as excitation force, surface area, and coupling.

Learning Objectives

• Explain how wheel-and-axle and pulley systems can change the direction and size of an applied force
• Compare fixed pulleys and movable pulleys in terms of mechanical advantage and how they affect effort
• Describe how wheel radius and axle radius relate to speed versus force trade-offs+ Show more

Learning Objectives

• Explain how species richness, relative abundance, and evenness describe biodiversity in a community.
• Identify how introduced and native species can change community composition over time.
• Describe how habitat heterogeneity supports greater biodiversity.

Learning Objectives

• Use ray models to describe how light travels in straight lines.
• Predict areas of full illumination and darkness using intersecting and extended rays.
• Explain how angle relationships determine reflected directions from smooth surfaces.

Learning Objectives

• Describe how strings, wind columns, and percussion change pitch or frequency
• Explain how vibration, resonance, and excitation relate to loudness
• Compare instrument features using measurable physical ideas like length, tension, and size

Learning Objectives

• Describe how smooth surfaces create mirror images using the relationship between incident and reflected directions.
• Explain where a plane mirror image appears to be located and how lateral inversion affects that image.
• Compare specular and diffuse reflection and predict how surface texture changes image clarity.+ Show more

Learning Objectives

• Identify examples of simple machines in everyday life.
• Classify simple machines by how they change force, distance, or direction.
• Explain how levers, inclined planes, wedges, screws, wheel-and-axles, and pulleys affect an input force.

Learning Objectives

• Describe how vibrating objects create compressions and rarefactions in matter
• Explain how frequency and amplitude affect pitch and loudness
• Identify examples of sound transmission in solids, liquids, and gases+ Show more

Learning Objectives

• Describe the difference between primary and secondary succession after a disturbance
• Identify how pioneer species and soil development change over time
• Explain how changing resources and species interactions affect community diversity

Learning Objectives

• Describe how transparent, translucent, and opaque materials affect light transmission
• Explain how absorption, reflection, and scattering change light intensity and appearance
• Identify how surface and bulk properties influence colour and the look of dimmed or filtered light+ Show more

Learning Objectives

• Describe how soil forms from weathered parent rock, organic matter, climate, topography, and time.
• Explain how soil horizons can differ in color, texture, and fertility.
• Predict how climate, slope, and drainage affect soil depth and development.+ Show more

Learning Objectives

• Identify producers, consumers, and decomposers in simple pond food chains.
• Explain how energy moves through a food chain using arrows.
• Describe how removing one link can affect other species in a food web.

Learning Objectives

• Identify mutualism, commensalism, and parasitism from short scenarios
• Explain how symbiotic relationships can affect survival and reproduction in a community
• Use evidence from a passage to describe how organisms benefit, are unaffected, or are harmed

Learning Objectives

• Explain how material choice and safety margins affect the reliability of simple mechanisms
• Describe how tolerance and fit influence whether gears, pulleys, and linkages work smoothly
• Evaluate design options using performance criteria such as mechanical advantage, strength, cost, and intended function+ Show more

Learning Objectives

• Describe how sound speed changes as it moves through solids, liquids, and gases
• Explain how reflections at boundaries can reduce clarity of sound
• Use temperature and medium properties to predict how sound propagation may change

Learning Objectives

• Explain how meshing gear teeth transfer motion from one gear to another
• Describe how gear size and tooth count affect output rotational speed and direction
• Compare the roles of idler gears and compound gear trains in changing motion

Learning Objectives

• Explain how friction reduces the efficiency of a mechanism by increasing the input force needed.
• Compare ideal mechanical advantage and actual mechanical advantage in real machines.
• Identify materials and surface features that affect wear, lubrication, and long-term performance.

Learning Objectives

• Compare natural and artificial light sources based on how they produce light.
• Describe how emitted light and reflected light differ when objects are seen.
• Use the idea that light travels in straight lines to predict visibility and beam paths.

Learning Objectives

• Describe how pulleys transfer motion to move a load.
• Compare single fixed pulleys with block-and-tackle systems in terms of mechanical advantage and rope distance.
• Explain how compound pulley arrangements and linkages can control motion and direction.

Learning Objectives

• Identify how sand, silt, clay, and loam differ in particle size and texture.
• Explain how soil texture affects permeability and aeration for plant roots.
• Describe how organic matter helps soil structure and nutrient retention.+ Show more

Learning Objectives

• Explain how land conversion, pollution, habitat fragmentation, and resource extraction can change habitats.
• Describe how human impacts can affect food chains, biodiversity, and population viability.
• Identify observable ecological indicators of habitat change in local urban, agricultural, and shoreline examples.+ Show more

Learning Objectives

• Describe how gears, pulleys, levers, and linkages work together to change force and motion
• Use torque and speed trade-offs to predict how a combined mechanism affects output motion
• Explain how interface points, direction reversals, and sequencing determine the final output+ Show more

Learning Objectives

• Explain how population size can increase or decrease over generations
• Identify traits and behaviors that can improve survival in a specific environment
• Match examples of limiting factors, predation, and disease to their effects on populations+ Show more

Learning Objectives

• Explain how water, ice, and wind can cause erosion and move sediment
• Describe how deposition forms landforms such as valleys, deltas, beaches, and moraines
• Use cause-and-effect language to explain how sediment patterns can record past environmental changes+ Show more

Learning Objectives

• Describe how heat, pressure, and chemically active fluids can change a preexisting rock into metamorphic rock.
• Compare contact metamorphism and regional metamorphism by where they form and what causes them.
• Explain how recrystallization and foliation relate to textures seen in metamorphic rocks.+ Show more

Learning Objectives

• Explain how slope and screw pitch can reduce the input force needed to move an object
• Compare ramps and screw threads as examples of inclined planes
• Describe how friction and surface contact can limit the mechanical advantage

Learning Objectives

• Explain how mechanical advantage relates input force and output force using a ratio.
• Use distance ratios (or gear tooth counts) to predict output distance.
• Identify correct units and representations for force, distance, and rotation.

Learning Objectives

• Describe the steps that form sedimentary rocks: weathering, erosion, transport, deposition, compaction, and cementation.
• Differentiate clastic, chemical, and organic sedimentary rocks using clear examples.
• Explain how grain sorting, bedding, and fossils can show past environments.+ Show more

Learning Objectives

• Classify common rocks as igneous, sedimentary, or metamorphic by observing texture and composition.
• Distinguish grain size, crystal arrangement, and layering/foliation using visible features.
• Explain how texture can record a rock’s formation environment, such as cooling rate or sediment transport.

Learning Objectives

• Explain how sound reflection creates echoes in open and enclosed spaces
• Describe how distance to a reflecting surface affects the time between direct and reflected sound
• Compare how soft and hard surfaces influence sound absorption and reverberation+ Show more

Learning Objectives

• Describe how habitat protection, restoration, and habitat creation support species recovery.
• Compare passive protection and active restoration as conservation strategies.
• Explain how protected areas and buffer zones can reduce harm to habitats.+ Show more

Learning Objectives

• Identify biotic and abiotic habitat components and explain how each affects living things
• Distinguish habitat from niche using simple examples such as pond edges and tree canopies
• Describe how shelter, food, water, and space help determine where species are found+ Show more

Learning Objectives

• Describe how water depth, soil saturation, and flooding shape wetland communities
• Identify plant and animal adaptations that help organisms live in wetlands
• Compare marshes, swamps, and bogs using dominant vegetation and hydrology+ Show more

Learning Objectives

• Describe how igneous, sedimentary, and metamorphic rocks connect through the rock cycle.
• Identify processes that change rock materials, including melting and cooling, weathering and erosion, transport, compaction and cementation, and heat and pressure.
• Explain that rock cycle changes repeat over geologic time and involve pathways that can loop.

Learning Objectives

• Explain how straight-line light creates shadows when an object blocks it
• Identify the umbra and penumbra and describe how they form
• Predict how changing distances and source size affect shadow sharpness and length+ Show more

Learning Objectives

• Understand factors that influence population increases or decreases in species.
• Identify both physical and behavioral adaptations that support species survival.
• Explain how environmental conditions affect population dynamics and adaptations.

Learning Objectives

• Identify different types of natural and artificial light sources.
• Describe how light interacts with objects to produce observed brightness and color.
• Explain the concept that light travels in straight lines and how this affects visibility and shadows.+ Show more

Learning Objectives

• Identify different types of energy: thermal, light, sound, and electrical.
• Describe sources and effects of various energy forms.
• Explain how energy moves through matter and space.+ Show more

Learning Objectives

• Classify rocks as igneous, sedimentary, or metamorphic using observable texture features.
• Identify how grain size, crystal arrangement, and layering or foliation relate to rock formation.
• Use common examples (basalt, granite, sandstone, shale, schist) to match texture to rock type.

Learning Objectives

• Identify and describe biotic and abiotic elements of habitats.
• Explain the concepts of habitat, niche, and how structural features support species distribution.
• Distinguish between habitat and niche with examples such as pond edge and canopy.+ Show more

Learning Objectives

• Identify map symbols and use the map scale to interpret distances on surface maps
• Explain how contour lines show elevation changes and identify steep vs. gentle slopes
• Determine drainage patterns from map features and describe how rivers deposit sediments+ Show more

Learning Objectives

• Generate multiple possible design solutions for a simple problem.
• Compare solutions using measurable and observable criteria such as distance, speed, and stability.
• Use qualitative and quantitative evidence to choose one solution for refinement.

Learning Objectives

• Describe how waves can be reflected, absorbed, or transmitted when they meet different materials
• Use the terms reflection, absorption, and transmission to explain observable changes in wave behavior
• Compare how different materials affect wave direction and intensity