Grade 4 Science Worksheets

Learning Objectives

• Describe the major stages in the life cycle of an animal and a plant
• Explain how evidence from body size, shape, and structures can show life cycle stages
• Compare how life cycle stages meet different needs as an organism grows

Learning Objectives

• Describe the steps in sedimentary rock formation: weathering, erosion, transport, deposition, compaction, and cementation
• Differentiate clastic, chemical, and organic sedimentary rocks using sandstone, limestone, and coal
• Explain how bedding, grain sorting, and fossil content can record past environments

Learning Objectives

• Identify what common weather instruments measure, such as temperature, rainfall, wind direction, and wind speed.
• Use correct units when describing weather data, including degrees Celsius, millimeters, and kilometers per hour.
• Explain why consistent measurements over time help compare changing weather conditions.+ Show more

Learning Objectives

• Explain how temperature changes can cause matter to melt or freeze
• Identify key differences between solids and liquids during phase changes
• Describe how melting and freezing are reversible processes

Learning Objectives

• Explain the roles of producers, consumers, and decomposers in an ecosystem
• Describe how energy and matter move through feeding relationships and nutrient recycling
• Use ecosystem role vocabulary to predict how changes affect other organisms

Learning Objectives

• Explain how community composition changes over time during primary and secondary succession
• Describe traits of pioneer species and how they help new ecosystems begin
• Identify how soil development and species interactions affect resource availability and biodiversity

Learning Objectives

• Identify how human activities change local habitats through land conversion, pollution, habitat fragmentation, and resource extraction.
• Describe how habitat changes can reduce biodiversity and disrupt food chains and ecological processes.
• Use observable ecological indicators (such as habitat area, water quality, and species presence) to explain environmental impacts.

Learning Objectives

• Understand the concept of food chains and how energy moves through ecosystems.
• Identify producers, consumers, and the flow of energy in food chains.
• Explain how changes in one organism can affect others in a food chain.+ Show more

Learning Objectives

• Understand how igneous rocks form from molten magma or lava.
• Distinguish between intrusive and extrusive igneous rocks based on cooling rates and crystal size.
• Learn how textures and mineral patterns record the cooling history and tectonic setting of igneous rocks.+ Show more

Learning Objectives

• Understand factors that influence population increases and decreases in species.
• Identify physical and behavioral adaptations that support species survival.
• Connect environmental conditions with species adaptations and population dynamics.+ Show more

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

• Explain how population changes over time can be caused by reproduction, resource limits, predation, disease, and other environmental factors
• Describe how adaptations (physical and behavioral) help organisms survive and persist in changing environments
• Use simple numerical reasoning to connect shifts in species abundance with survival advantages and limiting factors

Learning Objectives

• Explain how conservation strategies protect, restore, and create habitats to reduce human impacts.
• Describe how protected areas, buffer zones, and habitat corridors support species survival.
• Use ecological indicators to judge whether conservation efforts are improving habitats.

Learning Objectives

• Explain how environmental changes can disrupt the balance of an ecosystem.
• Describe how habitat conditions (temperature, rainfall, shelter, and food) affect which organisms survive and reproduce.
• Use evidence to connect changes in a habitat to changes in population sizes.+ Show more

Learning Objectives

• Explain how observable traits can be used to group living things into classifications.
• Use multiple traits as evidence to support a consistent classification.
• Differentiate between traits that are used for classification and changes that may happen over time or due to environment.

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

• 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

• Explain the difference between mass and volume as measurable properties of matter
• Identify appropriate units and tools used to measure mass and volume
• Compare properties across different samples, including how shape can change volume without changing mass

Learning Objectives

• Identify independent, dependent, and controlled variables in a scientific test
• Explain why controlled factors must be kept constant to reduce alternative explanations
• Use evidence such as measurements and graphs to describe relationships between variables

Learning Objectives

• Describe how energy moves through an ecosystem using a food chain.
• Identify producers and consumers and explain how they are connected in a food chain.
• Explain how changes in one population can affect other organisms in the chain.

Learning Objectives

• Identify the main stages of a plant life cycle (seed, sprout, mature plant, reproduction).
• Explain how plant structures such as roots, stems, leaves, flowers, and seeds support survival and reproduction.
• Describe how plants meet basic needs (water, nutrients, and light) during growth.+ Show more

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

• Understand how light moves in straight lines and how it creates shadows.
• Identify factors that affect the size and position of shadows.
• Predict shadow behavior based on light source position and object size.+ Show more

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

• 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 basic survival needs of living things, including water, air or gases, food, and suitable conditions.
• Explain how limited resources can change how living things function over time.
• Match survival needs to the organisms and conditions that depend on them.

Learning Objectives

• Explain how choosing consistent measurement methods and units helps make data usable for comparison across trials.
• Identify the responding variable in an investigation and describe which quantity should be recorded each time.
• Use clear criteria to decide what to count and how to record observations so results stay aligned with the claim.

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

• Identify different types of natural and artificial light sources and their characteristics.
• Understand how emitted and reflected light behave and how light travels in straight lines.
• Compare spectral output and perceived color of various light sources.+ Show more

Learning Objectives

• Understand how light interacts with different materials to transmit, scatter, or absorb.
• Identify examples of transparent, translucent, and opaque materials in everyday life.
• Explain how surface and bulk properties affect the appearance and behavior of materials under light.+ Show more

Learning Objectives

• Explain how flowing water, wind, and ice can break down and move Earth materials
• Identify how erosion changes landforms over time by transporting material to new locations
• Recognize evidence of erosion such as worn edges and exposed layers

Learning Objectives

• Distinguish weather from climate by describing what each term means.
• Explain how repeated weather observations can describe a region’s climate.
• Identify and describe weather elements such as temperature, precipitation, wind, and cloud cover.+ Show more

Learning Objectives

• Explain how changing string length, tension, and mass per unit length affects pitch.
• Describe how wind instruments change the effective air column to change pitch.
• Connect percussion size, tension, and stiffness to differences in frequency.+ Show more

Learning Objectives

• Explain how observable traits help scientists classify living things into groups.
• Use multiple traits as evidence to make a classification more reliable.
• Identify examples of traits such as body shape, covering, leaf structure, and seed form.

Learning Objectives

• Explain why repeated observations and measurements increase confidence in scientific conclusions.
• Identify patterns that remain similar across trials and describe how variation can still be normal.
• Use trial data to distinguish likely patterns from random outcomes.

Learning Objectives

• Explain how evidence from observations supports a scientific claim.
• Connect patterns in data to original observations and to predicted outcomes for similar situations.
• Revise a claim using the strength and limitations of the evidence.

Learning Objectives

• Explain how friction, wear, and deformation reduce a machine’s efficiency
• Distinguish ideal mechanical advantage from actual mechanical advantage
• Describe how material choice, lubrication, and surface finish affect performance and reliability

Learning Objectives

• Identify the living and nonliving components of an ecosystem
• Explain how nonliving factors (sunlight, water, air, temperature, and soil) affect which organisms can survive
• Describe how living things in an ecosystem depend on one another and on nonliving conditions

Learning Objectives

• Describe how igneous rocks form from molten magma or lava
• Compare intrusive and extrusive igneous rocks using cooling rate and crystal size
• Explain how mineral assemblages and textures can record a rock’s cooling history+ Show more

Learning Objectives

• Describe how inclined planes and screw threads can reduce required input force by increasing distance.
• Explain the relationship between ramp angle or thread pitch and mechanical advantage.
• Give real-world examples of inclined planes and screws and discuss how friction limits their effectiveness.

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

• 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 pulley systems transmit motion and can multiply force using mechanical advantage.
• Compare single fixed pulleys with block-and-tackle systems in terms of force and rope distance.
• Describe how compound pulley arrangements and linkage types control motion and produce different outcomes.+ 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

• 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

• Describe how moving water, wind, and ice can erode Earth materials.
• Explain how erosion transports materials from one place to another.
• Identify evidence of erosion such as worn edges and exposed layers.+ Show more

Learning Objectives

• Identify and describe common simple machines such as levers, inclined planes, wedges, screws, wheel-and-axles, and pulleys.
• Understand how simple machines change the magnitude, direction, or distance of an input force.
• Recognize examples of simple machines in daily life and explain their function.+ Show more

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