Grade 4 Science Worksheets

Learning Objectives

• Describe the roles of producers, consumers, and decomposers in an ecosystem
• Explain how organisms transfer energy through feeding relationships
• Model how decomposers return nutrients to the environment+ Show more

Learning Objectives

• Explain how constraints limit design options and create tradeoffs.
• Identify examples of competing needs in a simple engineering design problem.
• Use criteria to choose the best tradeoff that still meets important limits.+ Show more

Learning Objectives

• State a clear claim using precise scientific language.
• Match evidence to a claim and explain how the evidence supports it.
• Describe how patterns were interpreted from data using logical reasoning.+ Show more

Learning Objectives

• Explain how Earth’s rotation causes day and night
• Describe how the Sun appears to move across the sky during the day
• Use observations (daylight and darkness timing) to support the day/night pattern

Learning Objectives

• Understand the process of deposition and how it affects landforms.
• Identify different examples of deposition caused by water and wind.
• Explain how deposition builds up land over time.+ Show more

Learning Objectives

• Understand the concepts of mass and volume and how they are measured.
• Compare different samples based on their mass and volume.
• Recognize that the same mass can have different volumes depending on shape.+ Show more

Learning Objectives

• Explain how predator-prey interactions can change populations over time.
• Describe how competition for limited resources affects ecosystem stability.
• Identify mutual relationships and predict how connected populations may respond.

Learning Objectives

• Explain how heat, pressure, and chemically active fluids change preexisting rocks into metamorphic rocks.
• Distinguish between contact and regional metamorphism and recognize examples such as marble and gneiss.
• Describe how mineralogy, texture, and foliation are affected during metamorphic processes.+ 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 how shadows are formed by obstruction of light.
• Identify the features of sharp and soft shadows.
• Explain how distance and source size affect shadow size and sharpness.+ Show more

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

• Understand how Earth's rotation causes day and night.
• Identify patterns of daylight and darkness in the sky.
• Explain the movement of the Sun across the sky.+ Show more

Learning Objectives

• Explain how light travels in straight lines and how that creates shadows when an object blocks the light
• Predict how the size and position of a shadow change when an object moves, gets larger, or is placed closer to a surface
• Use simple straight-line reasoning to describe how the direction of incoming light affects a shadow’s orientation

Learning Objectives

• Identify the input, mechanism, control, and output parts of a simple technological system.
• Explain how energy moves through a system and how component properties affect how well it works.
• Connect system components to a real-world water-pumping design by choosing suitable materials and mechanisms.

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

• 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

• 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 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

• 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

• Identify how food, water, oxygen, and suitable temperatures support growth and development over time
• Explain how unmet needs can delay or stunt growth
• Describe how habitat features can affect growth in some organisms

Learning Objectives

• Understand the stages of complete and gradual metamorphosis in different organisms.
• Identify observable features across different stages of life cycles.
• Compare how organisms' body coverings, movement, and food sources change during development.+ 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

• Identify different functional roles within a community, such as producers, consumers, decomposers, pollinators, predators, and prey.
• Explain how energy and matter move through community roles and the importance of each role for habitat stability.
• Distinguish among feeding modes and trophic levels, giving local examples of plants, insects, and fungi.

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 evidence (data and observations) can support a scientific claim.
• Use reasoning to connect patterns in results to observations and predicted outcomes.
• Revise an explanation using what the evidence shows and noting the evidence’s limits.

Learning Objectives

• Explain how water, ice, and wind cause erosion and how deposited sediment builds landforms over time
• Describe key processes in rivers, deltas, glaciers, coasts, and how sediment moves and settles
• Use evidence from landforms to understand past environmental processes+ Show more

Learning Objectives

• Understand how recorded test results can show relationships between design changes and performance.
• Learn to identify patterns in test data to determine causes of failure.
• Apply evidence-based refinement to improve design outcomes.+ Show more

Learning Objectives

• Explain how light interacts with transparent, translucent, and opaque materials.
• Describe how surface and bulk properties affect color, intensity, and heat transfer.
• Use the ideas of transmission, absorption, and scattering to predict everyday phenomena.

Learning Objectives

• Explain how tables, charts, and graphs help organize data and show relationships between variables.
• Identify patterns (such as trends) in data representations and connect them to the question being investigated.
• Choose appropriate representations for measurements and interpret what the data show.

Learning Objectives

• Explain how deposition happens when moving water or wind loses energy
• Describe how deposited sediments can change the shape of landforms over time
• Compare two places using differences in sediment thickness to infer how materials accumulated+ Show more

Learning Objectives

• Explain how data representations (charts, graphs, and tables) help people understand patterns in data.
• Identify variables and describe how they relate in a visual display.
• Use evidence from a representation to make a claim about trends.

Learning Objectives

• Explain how mixtures can have components that remain distinct or become evenly spread.
• Describe how separation methods use physical property differences such as solubility, size, or evaporation.
• Identify examples of separation techniques and match them to the properties they use.+ Show more

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 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

• Understand how wheel-and-axle systems convert rotational motion into linear force.
• Identify the differences between fixed and movable pulleys.
• Explain how the sizes of wheel and axle affect mechanical advantage.+ Show more

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

• Explain how criteria and constraints guide prototype evaluation
• Compare prototype features to criteria while considering constraints
• Use evaluation results to narrow design options

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

• Understand different ways materials can combine and how they can be separated.
• Identify physical properties used to separate mixtures, such as size, solubility, and evaporation.
• Describe methods to recover parts of a mixture without changing the materials into new substances.+ Show more

Learning Objectives

• Understand how observations lead to identifying design problems.
• Learn how to connect real issues to possible solutions.
• Recognize different ways to modify shapes, materials, or structures in design.+ Show more

Learning Objectives

• Understand the natural forces that cause erosion, such as water, wind, and ice.
• Identify examples of erosion in landscapes and environments.
• Describe how erosion shapes Earth's surface over time.+ Show more

Learning Objectives

• Explain how straight-line light creates shadows when an object blocks it
• Describe the difference between umbra (full shadow) and penumbra (partial shadow)
• Predict how shadow sharpness changes with the size of the light source

Learning Objectives

• Explain how deposition happens when transporting forces slow down
• Describe how flowing water and wind deposit sediments in different places
• Use sediment thickness to infer how landforms can change over time

Learning Objectives

• Explain how combining gears, pulleys, levers, and linkages changes force, speed, and direction in a system.
• Identify interface points and sequencing in a combined mechanism that produce a desired output.
• Describe common design trade-offs in integrated mechanisms, such as torque versus speed and simplicity versus complexity.

Learning Objectives

• Explain the difference between weather and longer-term climate by using examples from observations.
• Identify common weather variables such as temperature, precipitation, wind, and cloud cover.
• Interpret weather patterns by comparing data across days, weeks, and seasons.+ Show more

Learning Objectives

• Identify biotic and abiotic habitat components and explain how each affects living things.
• Describe how shelter, food, water, space, and light help determine where organisms live.
• Explain the difference between habitat and niche using simple examples (pond edge vs. canopy).+ Show more

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

• 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.